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37 lines
1.2 KiB
LLVM
37 lines
1.2 KiB
LLVM
; RUN: llc < %s -widen-vmovs -mcpu=cortex-a8 -verify-machineinstrs -disable-block-placement | FileCheck %s
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target triple = "thumbv7-apple-ios"
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; The 1.0e+10 constant is loaded from the constant pool and kept in a register.
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; CHECK: %entry
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; CHECK: vldr s
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; The float loop variable is initialized with a vmovs from the constant register.
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; The vmovs is first widened to a vmovd, and then converted to a vorr because of the v2f32 vadd.f32.
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; CHECK: vorr [[DL:d[0-9]+]], [[DN:d[0-9]+]]
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; CHECK: , [[DN]]
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; CHECK: %for.body.i
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; CHECK: vadd.f32 [[DL]], [[DL]], [[DN]]
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; CHECK: %rInnerproduct.exit
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;
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; This test is verifying:
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; - The VMOVS widening is happening.
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; - Register liveness is verified.
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; - The execution domain switch to vorr works across basic blocks.
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define void @Mm(i32 %in, float* %addr) nounwind {
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entry:
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br label %for.body4
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for.body4:
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br label %for.body.i
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for.body.i:
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%tmp3.i = phi float [ 1.000000e+10, %for.body4 ], [ %add.i, %for.body.i ]
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%add.i = fadd float %tmp3.i, 1.000000e+10
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%exitcond.i = icmp eq i32 %in, 41
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br i1 %exitcond.i, label %rInnerproduct.exit, label %for.body.i
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rInnerproduct.exit:
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store float %add.i, float* %addr, align 4
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br label %for.body4
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}
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