peephole-bitcast.ll
886 Bytes
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=arm-- -mcpu=cortex-a8 | FileCheck %s
; Check that the peepholer removes dead instructions:
;
; vmov s0, r0
; vmov r0, s0
define void @t(float %x) nounwind ssp {
; CHECK-LABEL: t:
; 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: .LBB0_1: @ %if.then
; 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
if.then: ; preds = %entry
tail call void @doSomething(float %x) nounwind
br label %if.end
if.end: ; preds = %if.then, %entry
ret void
}
declare void @doSomething(float)