derek.holloway
7502bf64a4
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61 lines
1.6 KiB
LLVM
61 lines
1.6 KiB
LLVM
; RUN: opt -S -passes=hotcoldsplit -hotcoldsplit-threshold=0 < %s | FileCheck %s
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; Source:
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;
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; __attribute__((cold)) extern void sink(int);
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; extern void sideeffect(int);
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; void foo(int cond1, int cond2) {
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; if (cond1) {
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; if (cond2) { // This is the first cold region we visit.
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; sideeffect(0);
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; sink(0);
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; }
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;
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; // There's a larger, overlapping cold region here. But we ignore it.
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; // This could be improved.
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; sideeffect(1);
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; sink(1);
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; }
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; }
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.14.0"
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; CHECK-LABEL: define {{.*}}@_Z3fooii
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; CHECK: call {{.*}}@_Z3fooii.cold.1
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; CHECK-NOT: _Z3fooii.cold
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define void @_Z3fooii(i32, i32) {
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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store i32 %0, ptr %3, align 4
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store i32 %1, ptr %4, align 4
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%5 = load i32, ptr %3, align 4
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%6 = icmp ne i32 %5, 0
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br i1 %6, label %7, label %12
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; <label>:7: ; preds = %2
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%8 = load i32, ptr %4, align 4
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%9 = icmp ne i32 %8, 0
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br i1 %9, label %10, label %11
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; <label>:10: ; preds = %7
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call void @_Z10sideeffecti(i32 0)
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call void @_Z4sinki(i32 0) #3
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br label %11
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; <label>:11: ; preds = %10, %7
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call void @_Z10sideeffecti(i32 1)
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call void @_Z4sinki(i32 1) #3
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br label %12
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; <label>:12: ; preds = %11, %2
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ret void
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}
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; CHECK-LABEL: define internal {{.*}}@_Z3fooii.cold.1
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; CHECK: call void @_Z10sideeffecti(i32 0)
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declare void @_Z10sideeffecti(i32)
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declare void @_Z4sinki(i32) cold
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