Commit 20a1d03d authored by Sjoerd Meijer's avatar Sjoerd Meijer
Browse files

[ARM] peephole-bitcast test change. NFC. 

This test case was XFAIL'ed because the peepholer was missing an optimisation.
But the peepholer is now able to handle this case, so enable this test. I will
close the corresponding and very old PR11364.
parent 93b0536f

llvm/test/CodeGen/ARM/peephole-bitcast.ll

+12 −10
Original line number Diff line number Diff line 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py

; RUN: llc < %s -mtriple=arm-- -mcpu=cortex-a8 | FileCheck %s

; XFAIL: *

; PR11364



; vmov s0, r0 + vmov r0, s0 should have been optimized away.

; rdar://9104514



; Peephole leaves a dead vmovsr instruction behind, and depends on linear scan

; to remove it.

; Check that the peepholer removes dead instructions:

;

;   vmov s0, r0

;   vmov r0, s0



define void @t(float %x) nounwind ssp {

entry:

; CHECK-LABEL: t:

; CHECK-NOT: vmov

; CHECK:     bl

; CHECK:       @ %bb.0: @ %entry

; CHECK-NEXT:    movw r1, #65534

; CHECK-NEXT:    movt r1, #32639

; CHECK-NEXT:    cmp r0, r1

; CHECK-NEXT:    bxhi lr

; CHECK-NEXT:    b doSomething

entry:

  %0 = bitcast float %x to i32

  %cmp = icmp ult i32 %0, 2139095039

  br i1 %cmp, label %if.then, label %if.end