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https://github.com/c64scene-ar/llvm-6502.git
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ae3a0be92e
integer and floating-point opcodes, introducing FAdd, FSub, and FMul. For now, the AsmParser, BitcodeReader, and IRBuilder all preserve backwards compatability, and the Core LLVM APIs preserve backwards compatibility for IR producers. Most front-ends won't need to change immediately. This implements the first step of the plan outlined here: http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
692 B
LLVM
29 lines
692 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis > %t
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; RUN: not grep zext %t
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; RUN: not grep slt %t
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; RUN: grep {icmp ult} %t
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; Instcombine should convert the zext+slt into a simple ult.
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define void @foo(double* %p) nounwind {
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entry:
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br label %bb
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bb:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %bb ]
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%t0 = and i64 %indvar, 65535
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%t1 = getelementptr double* %p, i64 %t0
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%t2 = load double* %t1, align 8
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%t3 = fmul double %t2, 2.2
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store double %t3, double* %t1, align 8
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%i.04 = trunc i64 %indvar to i16
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%t4 = add i16 %i.04, 1
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%t5 = zext i16 %t4 to i32
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%t6 = icmp slt i32 %t5, 500
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%indvar.next = add i64 %indvar, 1
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br i1 %t6, label %bb, label %return
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return:
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ret void
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}
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