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https://github.com/c64scene-ar/llvm-6502.git
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87f4cf7028
The counter-loops formation pass needs to know what operations might be function calls (because they can't appear in counter-based loops). On PPC32, 128-bit shifts might be runtime calls (even though you can't use __int128 on PPC32, it seems that SROA might form them). Fixes PR19709. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208501 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
2.0 KiB
LLVM
73 lines
2.0 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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target datalayout = "E-m:e-p:32:32-i128:64-n32"
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target triple = "powerpc-ellcc-linux"
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; Function Attrs: nounwind
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define void @foo1(i128* %a, i128* readonly %b, i128* readonly %c) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i128* %b, align 16
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%1 = load i128* %c, align 16
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%shl = shl i128 %0, %1
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store i128 %shl, i128* %a, align 16
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%inc = add nsw i32 %i.02, 1
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%exitcond = icmp eq i32 %inc, 2048
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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; CHECK-LABEL: @foo1
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; CHECK-NOT: mtctr
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}
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; Function Attrs: nounwind
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define void @foo2(i128* %a, i128* readonly %b, i128* readonly %c) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i128* %b, align 16
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%1 = load i128* %c, align 16
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%shl = ashr i128 %0, %1
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store i128 %shl, i128* %a, align 16
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%inc = add nsw i32 %i.02, 1
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%exitcond = icmp eq i32 %inc, 2048
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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; CHECK-LABEL: @foo2
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; CHECK-NOT: mtctr
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}
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; Function Attrs: nounwind
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define void @foo3(i128* %a, i128* readonly %b, i128* readonly %c) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i128* %b, align 16
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%1 = load i128* %c, align 16
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%shl = lshr i128 %0, %1
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store i128 %shl, i128* %a, align 16
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%inc = add nsw i32 %i.02, 1
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%exitcond = icmp eq i32 %inc, 2048
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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; CHECK-LABEL: @foo3
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; CHECK-NOT: mtctr
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}
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attributes #0 = { nounwind }
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