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https://github.com/c64scene-ar/llvm-6502.git
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34 lines
1.7 KiB
LLVM
34 lines
1.7 KiB
LLVM
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; RUN: llc < %s | FileCheck %s
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; PR6941
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-darwin10.0.0"
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define i32 @snd_xbytes(i32 %v, i32 %from, i32 %to) nounwind readnone ssp {
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entry:
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%cmp19 = icmp eq i32 %to, 0 ; <i1> [#uses=1]
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br i1 %cmp19, label %while.end, label %while.cond
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while.cond: ; preds = %entry, %while.cond
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%y.021 = phi i32 [ %rem, %while.cond ], [ %to, %entry ] ; <i32> [#uses=3]
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%x.020 = phi i32 [ %y.021, %while.cond ], [ %from, %entry ] ; <i32> [#uses=1]
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%rem = urem i32 %x.020, %y.021 ; <i32> [#uses=2]
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%cmp = icmp eq i32 %rem, 0 ; <i1> [#uses=1]
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br i1 %cmp, label %while.end, label %while.cond
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while.end: ; preds = %while.cond, %entry
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%x.0.lcssa = phi i32 [ %from, %entry ], [ %y.021, %while.cond ] ; <i32> [#uses=2]
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%div = udiv i32 %from, %x.0.lcssa ; <i32> [#uses=1]
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%div11 = udiv i32 %to, %x.0.lcssa ; <i32> [#uses=1]
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%conv = zext i32 %v to i64 ; <i64> [#uses=1]
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%conv14 = zext i32 %div11 to i64 ; <i64> [#uses=1]
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; Verify that we don't clobber %eax after putting the imulq result in %rax
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; CHECK: imulq %r{{.}}x, %r[[RES:.]]x
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; CHECK-NOT: movl {{.*}}, %e[[RES]]x
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; CHECK: div
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%mul = mul i64 %conv14, %conv ; <i64> [#uses=1]
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%conv16 = zext i32 %div to i64 ; <i64> [#uses=1]
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%div17 = udiv i64 %mul, %conv16 ; <i64> [#uses=1]
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%conv18 = trunc i64 %div17 to i32 ; <i32> [#uses=1]
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ret i32 %conv18
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}
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