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https://github.com/c64scene-ar/llvm-6502.git
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064da63fcb
We were using a naive heuristic to determine whether a basic block already had an unconditional branch at the end. This mostly corresponded to reality (assuming branches got optimised) because there's not much point in a branch to the next block, but could go wrong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221904 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
561 B
LLVM
26 lines
561 B
LLVM
; RUN: llc -mtriple=thumbv7-linux-gnueabihf -O0 -fast-isel=0 -o - %s | FileCheck %s
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define void @test_no_duplicate_branches(float %in) {
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; CHECK-LABEL: test_no_duplicate_branches:
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; CHECK: vldr {{s[0-9]+}}, [[CONST:\.LCPI[0-9]+_[0-9]+]]
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; CHECK: b .LBB
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; CHECK-NOT: b .LBB
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; CHECK: [[CONST]]:
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; CHECK-NEXT: .long 1150963712
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%tst = fcmp oeq float %in, 1234.5
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%chain = zext i1 %tst to i32
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br i1 %tst, label %true, label %false
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true:
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call i32 @llvm.arm.space(i32 2000, i32 undef)
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ret void
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false:
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ret void
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}
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declare i32 @llvm.arm.space(i32, i32)
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