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06b11e36e5
This updates check for double precision zero floating point constant to allow use of instruction with immediate value rather than temporary register. Currently "a == 0.0", where "a" is of "double" type generates: vmov.i32 d16, #0x0 vcmpe.f64 d0, d16 With this change it becomes: vcmpe.f64 d0, #0 Patch by Sergey Dmitrouk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220486 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
380 B
LLVM
13 lines
380 B
LLVM
; RUN: llc -mtriple=linux-arm-gnueabihf -mattr=+neon %s -o - | FileCheck %s
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; Check that no intermediate integer register is used.
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define i32 @no-intermediate-register-for-zero-imm(double %x) #0 {
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entry:
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; CHECK-LABEL: no-intermediate-register-for-zero-imm
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; CHECK-NOT: vmov
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; CHECK: vcmp
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%cmp = fcmp une double %x, 0.000000e+00
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%conv = zext i1 %cmp to i32
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ret i32 %conv
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}
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