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23c462a8b5
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun llvm-svn: 363757
52 lines
2.5 KiB
LLVM
52 lines
2.5 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin -print-after=finalize-isel -enable-selectiondag-sp=true %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=DARWIN-SELDAG
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; RUN: llc -mtriple=x86_64-apple-darwin -print-after=finalize-isel -enable-selectiondag-sp=false %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=DARWIN-IR
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; RUN: llc -mtriple=i386-pc-windows-msvc -print-after=finalize-isel -enable-selectiondag-sp=true %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=MSVC-SELDAG
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; RUN: llc -mtriple=i386-pc-windows-msvc -print-after=finalize-isel -enable-selectiondag-sp=false %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=MSVC-IR
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; DARWIN-SELDAG: # Machine code for function test_branch_weights:
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; DARWIN-SELDAG: successors: %bb.[[SUCCESS:[0-9]+]](0x7ffff800), %bb.[[FAILURE:[0-9]+]]
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; DARWIN-SELDAG: bb.[[FAILURE]]{{[0-9a-zA-Z_.]+}}:
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; DARWIN-SELDAG: CALL64pcrel32 &__stack_chk_fail
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; DARWIN-SELDAG: bb.[[SUCCESS]]{{[0-9a-zA-Z_.]+}}:
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; DARWIN-IR: # Machine code for function test_branch_weights:
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; DARWIN-IR: successors: %bb.[[SUCCESS:[0-9]+]](0x7fffffff), %bb.[[FAILURE:[0-9]+]]
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; DARWIN-IR: bb.[[SUCCESS]]{{[0-9a-zA-Z_.]+}}:
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; DARWIN-IR: bb.[[FAILURE]]{{[0-9a-zA-Z_.]+}}:
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; DARWIN-IR: CALL64pcrel32 @__stack_chk_fail
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; MSVC-SELDAG: # Machine code for function test_branch_weights:
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; MSVC-SELDAG: :: (volatile load 4 from @__security_cookie)
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; MSVC-SELDAG: (store 4 into stack)
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; MSVC-SELDAG: (volatile load 4 from %stack.0.StackGuardSlot)
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; MSVC-SELDAG: CALLpcrel32 @__security_check_cookie
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; MSVC always uses selection DAG now.
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; MSVC-IR: # Machine code for function test_branch_weights:
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; MSVC-IR: :: (volatile load 4 from @__security_cookie)
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; MSVC-IR: (store 4 into stack)
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; MSVC-IR: (volatile load 4 from %stack.0.StackGuardSlot)
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; MSVC-IR: CALLpcrel32 @__security_check_cookie
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define i32 @test_branch_weights(i32 %n) #0 {
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entry:
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%a = alloca [128 x i32], align 16
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%0 = bitcast [128 x i32]* %a to i8*
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call void @llvm.lifetime.start.p0i8(i64 512, i8* %0)
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%arraydecay = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 0
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call void @foo2(i32* %arraydecay)
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%idxprom = sext i32 %n to i64
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%arrayidx = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 %idxprom
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%1 = load i32, i32* %arrayidx, align 4
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call void @llvm.lifetime.end.p0i8(i64 512, i8* %0)
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ret i32 %1
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}
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @foo2(i32*)
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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attributes #0 = { sspstrong "stack-protector-buffer-size"="8" }
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