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| ; RUN: llc -mcpu=corei7 -no-stack-coloring=false < %s | FileCheck %s --check-prefix=YESCOLOR --check-prefix=CHECK
; RUN: llc -mcpu=corei7 -no-stack-coloring=false -stackcoloring-lifetime-start-on-first-use=false < %s | FileCheck %s --check-prefix=NOFIRSTUSE --check-prefix=CHECK
; RUN: llc -mcpu=corei7 -no-stack-coloring=true < %s | FileCheck %s --check-prefix=NOCOLOR --check-prefix=CHECK
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
;CHECK-LABEL: myCall_w2:
;YESCOLOR: subq $144, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall_w2(i32 %in) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
}
;CHECK-LABEL: myCall2_no_merge
;YESCOLOR: subq $272, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall2_no_merge(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
ret i32 %t7
bb3:
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
ret i32 0
}
;CHECK-LABEL: myCall2_w2
;YESCOLOR: subq $144, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall2_w2(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
;CHECK-LABEL: myCall_w4:
;YESCOLOR: subq $120, %rsp
;NOFIRSTUSE: subq $200, %rsp
;NOCOLOR: subq $408, %rsp
define i32 @myCall_w4(i32 %in) {
entry:
%a1 = alloca [14 x i8*], align 8
%a2 = alloca [13 x i8*], align 8
%a3 = alloca [12 x i8*], align 8
%a4 = alloca [11 x i8*], align 8
%b1 = bitcast [14 x i8*]* %a1 to i8*
%b2 = bitcast [13 x i8*]* %a2 to i8*
%b3 = bitcast [12 x i8*]* %a3 to i8*
%b4 = bitcast [11 x i8*]* %a4 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b4)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b1)
%t1 = call i32 @foo(i32 %in, i8* %b1)
%t2 = call i32 @foo(i32 %in, i8* %b1)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b1)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t9 = call i32 @foo(i32 %in, i8* %b2)
%t8 = call i32 @foo(i32 %in, i8* %b2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b2)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b3)
%t3 = call i32 @foo(i32 %in, i8* %b3)
%t4 = call i32 @foo(i32 %in, i8* %b3)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b3)
%t11 = call i32 @foo(i32 %in, i8* %b4)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b4)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
}
;CHECK-LABEL: myCall2_w4:
;YESCOLOR: subq $112, %rsp
;NOCOLOR: subq $400, %rsp
define i32 @myCall2_w4(i32 %in) {
entry:
%a1 = alloca [14 x i8*], align 8
%a2 = alloca [13 x i8*], align 8
%a3 = alloca [12 x i8*], align 8
%a4 = alloca [11 x i8*], align 8
%b1 = bitcast [14 x i8*]* %a1 to i8*
%b2 = bitcast [13 x i8*]* %a2 to i8*
%b3 = bitcast [12 x i8*]* %a3 to i8*
%b4 = bitcast [11 x i8*]* %a4 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b1)
%t1 = call i32 @foo(i32 %in, i8* %b1)
%t2 = call i32 @foo(i32 %in, i8* %b1)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b1)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t9 = call i32 @foo(i32 %in, i8* %b2)
%t8 = call i32 @foo(i32 %in, i8* %b2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b2)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b3)
%t3 = call i32 @foo(i32 %in, i8* %b3)
%t4 = call i32 @foo(i32 %in, i8* %b3)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b3)
br i1 undef, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b4)
%t11 = call i32 @foo(i32 %in, i8* %b4)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b4)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
;CHECK-LABEL: myCall2_noend:
;YESCOLOR: subq $144, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall2_noend(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
;CHECK-LABEL: myCall2_noend2:
;YESCOLOR: subq $144, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall2_noend2(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
;CHECK-LABEL: myCall2_nostart:
;YESCOLOR: subq $272, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @myCall2_nostart(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
; Adopt the test from Transforms/Inline/array_merge.ll'
;CHECK-LABEL: array_merge:
;YESCOLOR: subq $808, %rsp
;NOCOLOR: subq $1608, %rsp
define void @array_merge() nounwind ssp {
entry:
%A.i1 = alloca [100 x i32], align 4
%B.i2 = alloca [100 x i32], align 4
%A.i = alloca [100 x i32], align 4
%B.i = alloca [100 x i32], align 4
%0 = bitcast [100 x i32]* %A.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0) nounwind
%1 = bitcast [100 x i32]* %B.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1) nounwind
call void @bar([100 x i32]* %A.i, [100 x i32]* %B.i) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1) nounwind
%2 = bitcast [100 x i32]* %A.i1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2) nounwind
%3 = bitcast [100 x i32]* %B.i2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3) nounwind
call void @bar([100 x i32]* %A.i1, [100 x i32]* %B.i2) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3) nounwind
ret void
}
;CHECK-LABEL: func_phi_lifetime:
;YESCOLOR: subq $272, %rsp
;NOCOLOR: subq $272, %rsp
define i32 @func_phi_lifetime(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
br i1 %d, label %bb0, label %bb1
bb0:
%I1 = bitcast [17 x i8*]* %a to i8*
br label %bb2
bb1:
%I2 = bitcast [16 x i8*]* %a2 to i8*
br label %bb2
bb2:
%split = phi i8* [ %I1, %bb0 ], [ %I2, %bb1 ]
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %split)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %split)
ret i32 %t7
bb3:
ret i32 0
}
;CHECK-LABEL: multi_region_bb:
;YESCOLOR: subq $272, %rsp
;NOCOLOR: subq $272, %rsp
define void @multi_region_bb() nounwind ssp {
entry:
%A.i1 = alloca [100 x i32], align 4
%B.i2 = alloca [100 x i32], align 4
%A.i = alloca [100 x i32], align 4
%B.i = alloca [100 x i32], align 4
%0 = bitcast [100 x i32]* %A.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0) nounwind ; <---- start #1
%1 = bitcast [100 x i32]* %B.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1) nounwind
call void @bar([100 x i32]* %A.i, [100 x i32]* %B.i) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1) nounwind
%2 = bitcast [100 x i32]* %A.i1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2) nounwind
%3 = bitcast [100 x i32]* %B.i2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3) nounwind
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0) nounwind ; <---- start #2
call void @bar([100 x i32]* %A.i1, [100 x i32]* %B.i2) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3) nounwind
ret void
}
define i32 @myCall_end_before_begin(i32 %in, i1 %d) {
entry:
%a = alloca [17 x i8*], align 8
%a2 = alloca [16 x i8*], align 8
%b = bitcast [17 x i8*]* %a to i8*
%b2 = bitcast [16 x i8*]* %a2 to i8*
%t1 = call i32 @foo(i32 %in, i8* %b)
%t2 = call i32 @foo(i32 %in, i8* %b)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b)
br i1 %d, label %bb2, label %bb3
bb2:
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b2)
%t3 = call i32 @foo(i32 %in, i8* %b2)
%t4 = call i32 @foo(i32 %in, i8* %b2)
%t5 = add i32 %t1, %t2
%t6 = add i32 %t3, %t4
%t7 = add i32 %t5, %t6
ret i32 %t7
bb3:
ret i32 0
}
; Regression test for PR15707. %buf1 and %buf2 should not be merged
; in this test case.
;CHECK-LABEL: myCall_pr15707:
;NOFIRSTUSE: subq $200008, %rsp
;NOCOLOR: subq $200008, %rsp
define void @myCall_pr15707() {
%buf1 = alloca i8, i32 100000, align 16
%buf2 = alloca i8, i32 100000, align 16
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %buf1)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf2)
%result1 = call i32 @foo(i32 0, i8* %buf1)
%result2 = call i32 @foo(i32 0, i8* %buf2)
ret void
}
; Check that we don't assert and crash even when there are allocas
; outside the declared lifetime regions.
;CHECK-LABEL: bad_range:
define void @bad_range() nounwind ssp {
entry:
%A.i1 = alloca [100 x i32], align 4
%B.i2 = alloca [100 x i32], align 4
%A.i = alloca [100 x i32], align 4
%B.i = alloca [100 x i32], align 4
%0 = bitcast [100 x i32]* %A.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0) nounwind
%1 = bitcast [100 x i32]* %B.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1) nounwind
call void @bar([100 x i32]* %A.i, [100 x i32]* %B.i) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0) nounwind
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1) nounwind
br label %block2
block2:
; I am used outside the marked lifetime.
call void @bar([100 x i32]* %A.i, [100 x i32]* %B.i) nounwind
ret void
}
; Check that we don't assert and crash even when there are usages
; of allocas which do not read or write outside the declared lifetime regions.
;CHECK-LABEL: shady_range:
%struct.Klass = type { i32, i32 }
define i32 @shady_range(i32 %argc, i8** nocapture %argv) uwtable {
%a.i = alloca [4 x %struct.Klass], align 16
%b.i = alloca [4 x %struct.Klass], align 16
%a8 = bitcast [4 x %struct.Klass]* %a.i to i8*
%b8 = bitcast [4 x %struct.Klass]* %b.i to i8*
; I am used outside the lifetime zone below:
%z2 = getelementptr inbounds [4 x %struct.Klass], [4 x %struct.Klass]* %a.i, i64 0, i64 0, i32 0
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a8)
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b8)
%z3 = load i32, i32* %z2, align 16
%r = call i32 @foo(i32 %z3, i8* %a8)
%r2 = call i32 @foo(i32 %z3, i8* %b8)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %a8)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b8)
ret i32 9
}
; In this case 'itar1' and 'itar2' can't be overlapped if we treat
; lifetime.start as the beginning of the lifetime, but we can
; overlap if we consider first use of the slot as lifetime
; start. See llvm bug 25776.
;CHECK-LABEL: ifthen_twoslots:
;YESCOLOR: subq $1544, %rsp
;NOFIRSTUSE: subq $2056, %rsp
;NOCOLOR: subq $2568, %rsp
define i32 @ifthen_twoslots(i32 %x) #0 {
entry:
%b1 = alloca [128 x i32], align 16
%b2 = alloca [128 x i32], align 16
%b3 = alloca [128 x i32], align 16
%b4 = alloca [128 x i32], align 16
%b5 = alloca [128 x i32], align 16
%tmp = bitcast [128 x i32]* %b1 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp)
%tmp1 = bitcast [128 x i32]* %b2 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp1)
%and = and i32 %x, 1
%tobool = icmp eq i32 %and, 0
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
%tmp2 = bitcast [128 x i32]* %b3 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp2)
%a1 = getelementptr inbounds [128 x i32], [128 x i32]* %b1, i64 0, i64 0
%a2 = getelementptr inbounds [128 x i32], [128 x i32]* %b3, i64 0, i64 0
call void @initb(i32* %a1, i32* %a2, i32* null)
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp2)
br label %if.end
if.else: ; preds = %entry
%tmp3 = bitcast [128 x i32]* %b4 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp3)
%tmp4 = bitcast [128 x i32]* %b5 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp4)
%a3 = getelementptr inbounds [128 x i32], [128 x i32]* %b2, i64 0, i64 0
%a4 = getelementptr inbounds [128 x i32], [128 x i32]* %b4, i64 0, i64 0
%a5 = getelementptr inbounds [128 x i32], [128 x i32]* %b5, i64 0, i64 0
call void @initb(i32* %a3, i32* %a4, i32* %a5) #3
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp4)
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp3)
br label %if.end
if.end: ; preds = %if.else, %if.then
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp1)
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp)
ret i32 0
}
; This function is intended to test the case where you
; have a reference to a stack slot that lies outside of
; the START/END lifetime markers-- the flow analysis
; should catch this and build the lifetime based on the
; markers only.
;CHECK-LABEL: while_loop:
;YESCOLOR: subq $1032, %rsp
;NOFIRSTUSE: subq $1544, %rsp
;NOCOLOR: subq $1544, %rsp
define i32 @while_loop(i32 %x) #0 {
entry:
%b1 = alloca [128 x i32], align 16
%b2 = alloca [128 x i32], align 16
%b3 = alloca [128 x i32], align 16
%tmp = bitcast [128 x i32]* %b1 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp) #3
%tmp1 = bitcast [128 x i32]* %b2 to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp1) #3
%and = and i32 %x, 1
%tobool = icmp eq i32 %and, 0
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
%arraydecay = getelementptr inbounds [128 x i32], [128 x i32]* %b2, i64 0, i64 0
call void @inita(i32* %arraydecay) #3
br label %if.end
if.else: ; preds = %entry
%arraydecay1 = getelementptr inbounds [128 x i32], [128 x i32]* %b1, i64 0, i64 0
call void @inita(i32* %arraydecay1) #3
%arraydecay3 = getelementptr inbounds [128 x i32], [128 x i32]* %b3, i64 0, i64 0
call void @inita(i32* %arraydecay3) #3
%tobool25 = icmp eq i32 %x, 0
br i1 %tobool25, label %if.end, label %while.body.lr.ph
while.body.lr.ph: ; preds = %if.else
%tmp2 = bitcast [128 x i32]* %b3 to i8*
br label %while.body
while.body: ; preds = %while.body.lr.ph, %while.body
%x.addr.06 = phi i32 [ %x, %while.body.lr.ph ], [ %dec, %while.body ]
%dec = add nsw i32 %x.addr.06, -1
call void @llvm.lifetime.start.p0i8(i64 512, i8* %tmp2) #3
call void @inita(i32* %arraydecay3) #3
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp2) #3
%tobool2 = icmp eq i32 %dec, 0
br i1 %tobool2, label %if.end.loopexit, label %while.body
if.end.loopexit: ; preds = %while.body
br label %if.end
if.end: ; preds = %if.end.loopexit, %if.else, %if.then
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp1) #3
call void @llvm.lifetime.end.p0i8(i64 512, i8* %tmp) #3
ret i32 0
}
; Test case motivated by PR27903. Same routine inlined multiple times
; into a caller results in a multi-segment lifetime, but the second
; lifetime has no explicit references to the stack slot. Such slots
; have to be treated conservatively.
;CHECK-LABEL: twobod_b27903:
;YESCOLOR: subq $96, %rsp
;NOFIRSTUSE: subq $96, %rsp
;NOCOLOR: subq $96, %rsp
define i32 @twobod_b27903(i32 %y, i32 %x) {
entry:
%buffer.i = alloca [12 x i32], align 16
%abc = alloca [12 x i32], align 16
%tmp = bitcast [12 x i32]* %buffer.i to i8*
call void @llvm.lifetime.start.p0i8(i64 48, i8* %tmp)
%idxprom.i = sext i32 %y to i64
%arrayidx.i = getelementptr inbounds [12 x i32], [12 x i32]* %buffer.i, i64 0, i64 %idxprom.i
call void @inita(i32* %arrayidx.i)
%add.i = add nsw i32 %x, %y
call void @llvm.lifetime.end.p0i8(i64 48, i8* %tmp)
%tobool = icmp eq i32 %y, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
%tmp1 = bitcast [12 x i32]* %abc to i8*
call void @llvm.lifetime.start.p0i8(i64 48, i8* %tmp1)
%arrayidx = getelementptr inbounds [12 x i32], [12 x i32]* %abc, i64 0, i64 %idxprom.i
call void @inita(i32* %arrayidx)
call void @llvm.lifetime.start.p0i8(i64 48, i8* %tmp)
call void @inita(i32* %arrayidx.i)
%add.i9 = add nsw i32 %add.i, %y
call void @llvm.lifetime.end.p0i8(i64 48, i8* %tmp)
call void @llvm.lifetime.end.p0i8(i64 48, i8* %tmp1)
br label %if.end
if.end: ; preds = %if.then, %entry
%x.addr.0 = phi i32 [ %add.i9, %if.then ], [ %add.i, %entry ]
ret i32 %x.addr.0
}
;CHECK-LABEL: multi_segment:
;YESCOLOR: subq $256, %rsp
;NOFIRSTUSE: subq $256, %rsp
;NOCOLOR: subq $512, %rsp
define i1 @multi_segment(i1, i1)
{
entry-block:
%foo = alloca [32 x i64]
%bar = alloca [32 x i64]
%foo_i8 = bitcast [32 x i64]* %foo to i8*
%bar_i8 = bitcast [32 x i64]* %bar to i8*
call void @llvm.lifetime.start.p0i8(i64 256, i8* %bar_i8)
call void @baz([32 x i64]* %bar, i32 1)
call void @llvm.lifetime.end.p0i8(i64 256, i8* %bar_i8)
call void @llvm.lifetime.start.p0i8(i64 256, i8* %foo_i8)
call void @baz([32 x i64]* %foo, i32 1)
call void @llvm.lifetime.end.p0i8(i64 256, i8* %foo_i8)
call void @llvm.lifetime.start.p0i8(i64 256, i8* %bar_i8)
call void @baz([32 x i64]* %bar, i32 1)
call void @llvm.lifetime.end.p0i8(i64 256, i8* %bar_i8)
ret i1 true
}
;CHECK-LABEL: pr32488:
;YESCOLOR: subq $256, %rsp
;NOFIRSTUSE: subq $256, %rsp
;NOCOLOR: subq $512, %rsp
define i1 @pr32488(i1, i1)
{
entry-block:
%foo = alloca [32 x i64]
%bar = alloca [32 x i64]
%foo_i8 = bitcast [32 x i64]* %foo to i8*
%bar_i8 = bitcast [32 x i64]* %bar to i8*
br i1 %0, label %if_false, label %if_true
if_false:
call void @llvm.lifetime.start.p0i8(i64 256, i8* %bar_i8)
call void @baz([32 x i64]* %bar, i32 0)
br i1 %1, label %if_false.1, label %onerr
if_false.1:
call void @llvm.lifetime.end.p0i8(i64 256, i8* %bar_i8)
br label %merge
if_true:
call void @llvm.lifetime.start.p0i8(i64 256, i8* %foo_i8)
call void @baz([32 x i64]* %foo, i32 1)
br i1 %1, label %if_true.1, label %onerr
if_true.1:
call void @llvm.lifetime.end.p0i8(i64 256, i8* %foo_i8)
br label %merge
merge:
ret i1 false
onerr:
call void @llvm.lifetime.end.p0i8(i64 256, i8* %foo_i8)
call void @llvm.lifetime.end.p0i8(i64 256, i8* %bar_i8)
call void @destructor()
ret i1 true
}
%Data = type { [32 x i64] }
declare void @destructor()
declare void @inita(i32*)
declare void @initb(i32*,i32*,i32*)
declare void @bar([100 x i32]* , [100 x i32]*) nounwind
declare void @baz([32 x i64]*, i32)
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
declare i32 @foo(i32, i8*)
|