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https://github.com/c64scene-ar/llvm-6502.git
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2c5f19db2e
to expose greater opportunities for store narrowing in codegen. This patch fixes a potential infinite loop in instcombine caused by one of the introduced transforms being overly aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113763 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
911 B
LLVM
40 lines
911 B
LLVM
; RUN: llc < %s -O0 -arm-fast-isel -fast-isel-abort -mtriple=armv7-apple-darwin
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; RUN: llc < %s -O0 -arm-fast-isel -fast-isel-abort -mtriple=thumbv7-apple-darwin
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; Very basic fast-isel functionality.
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define i32 @add(i32 %a, i32 %b) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca i32, align 4
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store i32 %a, i32* %a.addr
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store i32 %b, i32* %b.addr
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%tmp = load i32* %a.addr
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%tmp1 = load i32* %b.addr
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%add = add nsw i32 %tmp, %tmp1
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ret i32 %add
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}
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define i32* @foo(i32* %p, i32* %q, i32** %z) nounwind {
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entry:
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%r = load i32* %p
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%s = load i32* %q
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%y = load i32** %z
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br label %fast
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fast:
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%t0 = add i32 %r, %s
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%t1 = mul i32 %t0, %s
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%t2 = sub i32 %t1, %s
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%t3 = and i32 %t2, %s
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%t4 = xor i32 %t3, 3
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%t5 = xor i32 %t4, %s
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%t6 = add i32 %t5, 2
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%t7 = getelementptr i32* %y, i32 1
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%t8 = getelementptr i32* %t7, i32 %t6
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br label %exit
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exit:
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ret i32* %t8
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}
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