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https://github.com/c64scene-ar/llvm-6502.git
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5738b77176
Compiling the following function with -O0 would crash, since LLVM would
hit an assertion in getTestUnderMaskCond:
int test(unsigned long x)
{
return x >= 0 && x <= 15;
}
Fixed by detecting the case in the caller of getTestUnderMaskCond.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233541 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
829 B
LLVM
31 lines
829 B
LLVM
; Verify that we do not crash on always-true conditions
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 -O0
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;
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; This test was compiled using clang -O0 from the following source code:
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;
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; int test(unsigned long x)
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; {
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; return x >= 0 && x <= 15;
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; }
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define signext i32 @test(i64 %x) {
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entry:
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%x.addr = alloca i64, align 8
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store i64 %x, i64* %x.addr, align 8
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%0 = load i64, i64* %x.addr, align 8
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%cmp = icmp uge i64 %0, 0
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br i1 %cmp, label %land.rhs, label %land.end
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land.rhs: ; preds = %entry
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%1 = load i64, i64* %x.addr, align 8
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%cmp1 = icmp ule i64 %1, 15
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br label %land.end
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land.end: ; preds = %land.rhs, %entry
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%2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ]
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%land.ext = zext i1 %2 to i32
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ret i32 %land.ext
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}
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