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90e010bd3c
This patch combines some cases of ARMISD::CMOV for integers that arise in comparisons of the form a != b ? x : 0 a == b ? 0 : x and that currently (e.g. in Thumb1) are emitted as branches. Differential Revision: https://reviews.llvm.org/D34515 llvm-svn: 325323
75 lines
2.1 KiB
LLVM
75 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=arm-eabi -mcpu=cortex-a8 | FileCheck %s
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define zeroext i1 @ne_neg1_and_ne_zero(i32 %x) nounwind {
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; CHECK-LABEL: ne_neg1_and_ne_zero:
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; CHECK: @ %bb.0:
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; CHECK-NEXT: add r1, r0, #1
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; CHECK-NEXT: mov r0, #0
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; CHECK-NEXT: cmp r1, #1
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; CHECK-NEXT: movwhi r0, #1
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; CHECK-NEXT: bx lr
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%cmp1 = icmp ne i32 %x, -1
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%cmp2 = icmp ne i32 %x, 0
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%and = and i1 %cmp1, %cmp2
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ret i1 %and
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}
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; PR32401 - https://bugs.llvm.org/show_bug.cgi?id=32401
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define zeroext i1 @and_eq(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
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; CHECK-LABEL: and_eq:
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; CHECK: @ %bb.0:
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; CHECK: eor r2, r2, r3
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; CHECK: eor r0, r0, r1
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; CHECK: orr r0, r0, r2
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; CHECK: clz r0, r0
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; CHECK: lsr r0, r0, #5
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; CHECK: bx lr
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%cmp1 = icmp eq i32 %a, %b
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%cmp2 = icmp eq i32 %c, %d
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%and = and i1 %cmp1, %cmp2
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ret i1 %and
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}
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define zeroext i1 @or_ne(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
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; CHECK-LABEL: or_ne:
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; CHECK: @ %bb.0:
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; CHECK-NEXT: eor r2, r2, r3
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; CHECK-NEXT: eor r0, r0, r1
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; CHECK-NEXT: orrs r0, r0, r2
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; CHECK-NEXT: movwne r0, #1
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; CHECK-NEXT: bx lr
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%cmp1 = icmp ne i32 %a, %b
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%cmp2 = icmp ne i32 %c, %d
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%or = or i1 %cmp1, %cmp2
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ret i1 %or
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}
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define <4 x i1> @and_eq_vec(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c, <4 x i32> %d) nounwind {
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; CHECK-LABEL: and_eq_vec:
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; CHECK: @ %bb.0:
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; CHECK-NEXT: .save {r11, lr}
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; CHECK-NEXT: push {r11, lr}
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; CHECK-NEXT: vmov d19, r2, r3
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; CHECK-NEXT: add r12, sp, #40
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; CHECK-NEXT: add lr, sp, #8
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; CHECK-NEXT: vmov d18, r0, r1
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; CHECK-NEXT: vld1.64 {d16, d17}, [lr]
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; CHECK-NEXT: add r0, sp, #24
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; CHECK-NEXT: vld1.64 {d20, d21}, [r12]
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; CHECK-NEXT: vceq.i32 q8, q9, q8
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; CHECK-NEXT: vld1.64 {d22, d23}, [r0]
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; CHECK-NEXT: vceq.i32 q9, q11, q10
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; CHECK-NEXT: vmovn.i32 d16, q8
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; CHECK-NEXT: vmovn.i32 d17, q9
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; CHECK-NEXT: vand d16, d16, d17
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; CHECK-NEXT: vmov r0, r1, d16
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; CHECK-NEXT: pop {r11, pc}
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%cmp1 = icmp eq <4 x i32> %a, %b
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%cmp2 = icmp eq <4 x i32> %c, %d
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%and = and <4 x i1> %cmp1, %cmp2
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ret <4 x i1> %and
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}
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