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https://github.com/RPCS3/llvm-mirror.git
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bd58f59001
Move fold of (sext (not i1 x)) -> (add (zext i1 x), -1) from X86 to DAGCombiner to improve codegen on other targets. Differential Revision: https://reviews.llvm.org/D91589
761 lines
19 KiB
LLVM
761 lines
19 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=arm-eabi-unknown-unknown | FileCheck %s --check-prefix=ARM
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; RUN: llc < %s -mtriple=thumbv6t2-eabi-unknown-unknown | FileCheck %s --check-prefix=THUMB2
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; RUN: llc < %s -mtriple=thumb-eabi-unknown-unknown | FileCheck %s --check-prefix=THUMB
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; Select of constants: control flow / conditional moves can always be replaced by logic+math (but may not be worth it?).
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; Test the zeroext/signext variants of each pattern to see if that makes a difference.
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; select Cond, 0, 1 --> zext (!Cond)
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define i32 @select_0_or_1(i1 %cond) {
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; ARM-LABEL: select_0_or_1:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov r1, #1
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; ARM-NEXT: bic r0, r1, r0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_1:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: movs r1, #1
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; THUMB2-NEXT: bic.w r0, r1, r0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_1:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: bics r1, r0
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; THUMB-NEXT: movs r0, r1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 1
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ret i32 %sel
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}
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define i32 @select_0_or_1_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_0_or_1_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: eor r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_1_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: eor r0, r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_1_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: eors r0, r1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 1
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ret i32 %sel
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}
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define i32 @select_0_or_1_signext(i1 signext %cond) {
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; ARM-LABEL: select_0_or_1_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov r1, #1
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; ARM-NEXT: bic r0, r1, r0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_1_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: movs r1, #1
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; THUMB2-NEXT: bic.w r0, r1, r0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_1_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: bics r1, r0
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; THUMB-NEXT: movs r0, r1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 1
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ret i32 %sel
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}
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; select Cond, 1, 0 --> zext (Cond)
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define i32 @select_1_or_0(i1 %cond) {
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; ARM-LABEL: select_1_or_0:
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; ARM: @ %bb.0:
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; ARM-NEXT: and r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_1_or_0:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: and r0, r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_1_or_0:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: ands r0, r1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 1, i32 0
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ret i32 %sel
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}
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define i32 @select_1_or_0_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_1_or_0_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_1_or_0_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_1_or_0_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 1, i32 0
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ret i32 %sel
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}
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define i32 @select_1_or_0_signext(i1 signext %cond) {
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; ARM-LABEL: select_1_or_0_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: and r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_1_or_0_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: and r0, r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_1_or_0_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: ands r0, r1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 1, i32 0
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ret i32 %sel
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}
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; select Cond, 0, -1 --> sext (!Cond)
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define i32 @select_0_or_neg1(i1 %cond) {
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; ARM-LABEL: select_0_or_neg1:
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; ARM: @ %bb.0:
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; ARM-NEXT: and r0, r0, #1
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; ARM-NEXT: sub r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: and r0, r0, #1
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; THUMB2-NEXT: subs r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: ands r1, r0
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; THUMB-NEXT: subs r0, r1, #1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 -1
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ret i32 %sel
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}
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define i32 @select_0_or_neg1_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_0_or_neg1_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: sub r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: subs r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: subs r0, r0, #1
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 -1
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ret i32 %sel
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}
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define i32 @select_0_or_neg1_signext(i1 signext %cond) {
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; ARM-LABEL: select_0_or_neg1_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mvn r0, r0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: mvns r0, r0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: mvns r0, r0
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 0, i32 -1
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ret i32 %sel
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}
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define i32 @select_0_or_neg1_alt(i1 %cond) {
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; ARM-LABEL: select_0_or_neg1_alt:
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; ARM: @ %bb.0:
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; ARM-NEXT: and r0, r0, #1
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; ARM-NEXT: sub r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1_alt:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: and r0, r0, #1
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; THUMB2-NEXT: subs r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1_alt:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: ands r1, r0
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; THUMB-NEXT: subs r0, r1, #1
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; THUMB-NEXT: bx lr
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%z = zext i1 %cond to i32
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%add = add i32 %z, -1
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ret i32 %add
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}
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define i32 @select_0_or_neg1_alt_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_0_or_neg1_alt_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: sub r0, r0, #1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1_alt_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: subs r0, #1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1_alt_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: subs r0, r0, #1
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; THUMB-NEXT: bx lr
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%z = zext i1 %cond to i32
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%add = add i32 %z, -1
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ret i32 %add
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}
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define i32 @select_0_or_neg1_alt_signext(i1 signext %cond) {
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; ARM-LABEL: select_0_or_neg1_alt_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mvn r0, r0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_0_or_neg1_alt_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: mvns r0, r0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_0_or_neg1_alt_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: mvns r0, r0
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; THUMB-NEXT: bx lr
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%z = zext i1 %cond to i32
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%add = add i32 %z, -1
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ret i32 %add
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}
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; select Cond, -1, 0 --> sext (Cond)
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define i32 @select_neg1_or_0(i1 %cond) {
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; ARM-LABEL: select_neg1_or_0:
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; ARM: @ %bb.0:
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; ARM-NEXT: and r0, r0, #1
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; ARM-NEXT: rsb r0, r0, #0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_neg1_or_0:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: and r0, r0, #1
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; THUMB2-NEXT: rsbs r0, r0, #0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_neg1_or_0:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: movs r1, #1
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; THUMB-NEXT: ands r1, r0
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; THUMB-NEXT: rsbs r0, r1, #0
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 -1, i32 0
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ret i32 %sel
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}
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define i32 @select_neg1_or_0_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_neg1_or_0_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: rsb r0, r0, #0
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_neg1_or_0_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: rsbs r0, r0, #0
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_neg1_or_0_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: rsbs r0, r0, #0
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 -1, i32 0
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ret i32 %sel
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}
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define i32 @select_neg1_or_0_signext(i1 signext %cond) {
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; ARM-LABEL: select_neg1_or_0_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_neg1_or_0_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_neg1_or_0_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 -1, i32 0
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ret i32 %sel
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}
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; select Cond, C+1, C --> add (zext Cond), C
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define i32 @select_Cplus1_C(i1 %cond) {
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; ARM-LABEL: select_Cplus1_C:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov r1, #41
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; ARM-NEXT: tst r0, #1
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; ARM-NEXT: movne r1, #42
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; ARM-NEXT: mov r0, r1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_Cplus1_C:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: lsls r0, r0, #31
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; THUMB2-NEXT: mov.w r0, #41
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; THUMB2-NEXT: it ne
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; THUMB2-NEXT: movne r0, #42
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_Cplus1_C:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: lsls r0, r0, #31
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; THUMB-NEXT: bne .LBB15_2
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; THUMB-NEXT: @ %bb.1:
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; THUMB-NEXT: movs r0, #41
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; THUMB-NEXT: bx lr
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; THUMB-NEXT: .LBB15_2:
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; THUMB-NEXT: movs r0, #42
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 42, i32 41
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ret i32 %sel
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}
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define i32 @select_Cplus1_C_zeroext(i1 zeroext %cond) {
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; ARM-LABEL: select_Cplus1_C_zeroext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov r1, #41
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; ARM-NEXT: cmp r0, #0
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; ARM-NEXT: movne r1, #42
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; ARM-NEXT: mov r0, r1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_Cplus1_C_zeroext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: movs r1, #41
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; THUMB2-NEXT: cmp r0, #0
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; THUMB2-NEXT: it ne
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; THUMB2-NEXT: movne r1, #42
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; THUMB2-NEXT: mov r0, r1
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_Cplus1_C_zeroext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: cmp r0, #0
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; THUMB-NEXT: bne .LBB16_2
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; THUMB-NEXT: @ %bb.1:
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; THUMB-NEXT: movs r0, #41
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; THUMB-NEXT: bx lr
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; THUMB-NEXT: .LBB16_2:
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; THUMB-NEXT: movs r0, #42
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 42, i32 41
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ret i32 %sel
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}
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define i32 @select_Cplus1_C_signext(i1 signext %cond) {
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; ARM-LABEL: select_Cplus1_C_signext:
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; ARM: @ %bb.0:
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; ARM-NEXT: mov r1, #41
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; ARM-NEXT: tst r0, #1
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; ARM-NEXT: movne r1, #42
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; ARM-NEXT: mov r0, r1
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; ARM-NEXT: mov pc, lr
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;
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; THUMB2-LABEL: select_Cplus1_C_signext:
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; THUMB2: @ %bb.0:
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; THUMB2-NEXT: lsls r0, r0, #31
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; THUMB2-NEXT: mov.w r0, #41
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; THUMB2-NEXT: it ne
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; THUMB2-NEXT: movne r0, #42
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; THUMB2-NEXT: bx lr
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;
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; THUMB-LABEL: select_Cplus1_C_signext:
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; THUMB: @ %bb.0:
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; THUMB-NEXT: lsls r0, r0, #31
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; THUMB-NEXT: bne .LBB17_2
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; THUMB-NEXT: @ %bb.1:
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; THUMB-NEXT: movs r0, #41
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; THUMB-NEXT: bx lr
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; THUMB-NEXT: .LBB17_2:
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; THUMB-NEXT: movs r0, #42
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; THUMB-NEXT: bx lr
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%sel = select i1 %cond, i32 42, i32 41
|
|
ret i32 %sel
|
|
}
|
|
|
|
; select Cond, C, C+1 --> add (sext Cond), C
|
|
|
|
define i32 @select_C_Cplus1(i1 %cond) {
|
|
; ARM-LABEL: select_C_Cplus1:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #42
|
|
; ARM-NEXT: tst r0, #1
|
|
; ARM-NEXT: movne r1, #41
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C_Cplus1:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: lsls r0, r0, #31
|
|
; THUMB2-NEXT: mov.w r0, #42
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movne r0, #41
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C_Cplus1:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: lsls r0, r0, #31
|
|
; THUMB-NEXT: bne .LBB18_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB18_2:
|
|
; THUMB-NEXT: movs r0, #41
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 41, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
define i32 @select_C_Cplus1_zeroext(i1 zeroext %cond) {
|
|
; ARM-LABEL: select_C_Cplus1_zeroext:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #42
|
|
; ARM-NEXT: cmp r0, #0
|
|
; ARM-NEXT: movne r1, #41
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C_Cplus1_zeroext:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: movs r1, #42
|
|
; THUMB2-NEXT: cmp r0, #0
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movne r1, #41
|
|
; THUMB2-NEXT: mov r0, r1
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C_Cplus1_zeroext:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: cmp r0, #0
|
|
; THUMB-NEXT: bne .LBB19_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB19_2:
|
|
; THUMB-NEXT: movs r0, #41
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 41, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
define i32 @select_C_Cplus1_signext(i1 signext %cond) {
|
|
; ARM-LABEL: select_C_Cplus1_signext:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #42
|
|
; ARM-NEXT: tst r0, #1
|
|
; ARM-NEXT: movne r1, #41
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C_Cplus1_signext:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: lsls r0, r0, #31
|
|
; THUMB2-NEXT: mov.w r0, #42
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movne r0, #41
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C_Cplus1_signext:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: lsls r0, r0, #31
|
|
; THUMB-NEXT: bne .LBB20_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB20_2:
|
|
; THUMB-NEXT: movs r0, #41
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 41, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
; In general, select of 2 constants could be:
|
|
; select Cond, C1, C2 --> add (mul (zext Cond), C1-C2), C2 --> add (and (sext Cond), C1-C2), C2
|
|
|
|
define i32 @select_C1_C2(i1 %cond) {
|
|
; ARM-LABEL: select_C1_C2:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #165
|
|
; ARM-NEXT: tst r0, #1
|
|
; ARM-NEXT: orr r1, r1, #256
|
|
; ARM-NEXT: moveq r1, #42
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C1_C2:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: lsls r0, r0, #31
|
|
; THUMB2-NEXT: mov.w r0, #42
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movwne r0, #421
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C1_C2:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: lsls r0, r0, #31
|
|
; THUMB-NEXT: bne .LBB21_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB21_2:
|
|
; THUMB-NEXT: movs r0, #255
|
|
; THUMB-NEXT: adds r0, #166
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 421, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
define i32 @select_C1_C2_zeroext(i1 zeroext %cond) {
|
|
; ARM-LABEL: select_C1_C2_zeroext:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #165
|
|
; ARM-NEXT: cmp r0, #0
|
|
; ARM-NEXT: orr r1, r1, #256
|
|
; ARM-NEXT: moveq r1, #42
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C1_C2_zeroext:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: movs r1, #42
|
|
; THUMB2-NEXT: cmp r0, #0
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movwne r1, #421
|
|
; THUMB2-NEXT: mov r0, r1
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C1_C2_zeroext:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: cmp r0, #0
|
|
; THUMB-NEXT: bne .LBB22_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB22_2:
|
|
; THUMB-NEXT: movs r0, #255
|
|
; THUMB-NEXT: adds r0, #166
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 421, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
define i32 @select_C1_C2_signext(i1 signext %cond) {
|
|
; ARM-LABEL: select_C1_C2_signext:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #165
|
|
; ARM-NEXT: tst r0, #1
|
|
; ARM-NEXT: orr r1, r1, #256
|
|
; ARM-NEXT: moveq r1, #42
|
|
; ARM-NEXT: mov r0, r1
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: select_C1_C2_signext:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: lsls r0, r0, #31
|
|
; THUMB2-NEXT: mov.w r0, #42
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movwne r0, #421
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: select_C1_C2_signext:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: lsls r0, r0, #31
|
|
; THUMB-NEXT: bne .LBB23_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #42
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .LBB23_2:
|
|
; THUMB-NEXT: movs r0, #255
|
|
; THUMB-NEXT: adds r0, #166
|
|
; THUMB-NEXT: bx lr
|
|
%sel = select i1 %cond, i32 421, i32 42
|
|
ret i32 %sel
|
|
}
|
|
|
|
; 4295032833 = 0x100010001.
|
|
; This becomes an opaque constant via ConstantHoisting, so we don't fold it into the select.
|
|
|
|
define i64 @opaque_constant1(i1 %cond, i64 %x) {
|
|
; ARM-LABEL: opaque_constant1:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: .save {r4, lr}
|
|
; ARM-NEXT: push {r4, lr}
|
|
; ARM-NEXT: mov lr, #1
|
|
; ARM-NEXT: ands r12, r0, #1
|
|
; ARM-NEXT: mov r0, #23
|
|
; ARM-NEXT: orr lr, lr, #65536
|
|
; ARM-NEXT: mvnne r0, #3
|
|
; ARM-NEXT: and r4, r0, lr
|
|
; ARM-NEXT: movne r12, #1
|
|
; ARM-NEXT: subs r0, r4, #1
|
|
; ARM-NEXT: eor r2, r2, lr
|
|
; ARM-NEXT: eor r3, r3, #1
|
|
; ARM-NEXT: sbc r1, r12, #0
|
|
; ARM-NEXT: orrs r2, r2, r3
|
|
; ARM-NEXT: movne r0, r4
|
|
; ARM-NEXT: movne r1, r12
|
|
; ARM-NEXT: pop {r4, lr}
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: opaque_constant1:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: .save {r7, lr}
|
|
; THUMB2-NEXT: push {r7, lr}
|
|
; THUMB2-NEXT: ands r12, r0, #1
|
|
; THUMB2-NEXT: mov.w lr, #1
|
|
; THUMB2-NEXT: itt ne
|
|
; THUMB2-NEXT: movne.w lr, #65536
|
|
; THUMB2-NEXT: movne.w r12, #1
|
|
; THUMB2-NEXT: subs.w r0, lr, #1
|
|
; THUMB2-NEXT: sbc r1, r12, #0
|
|
; THUMB2-NEXT: eor r3, r3, #1
|
|
; THUMB2-NEXT: eor r2, r2, #65537
|
|
; THUMB2-NEXT: orrs r2, r3
|
|
; THUMB2-NEXT: itt ne
|
|
; THUMB2-NEXT: movne r0, lr
|
|
; THUMB2-NEXT: movne r1, r12
|
|
; THUMB2-NEXT: pop {r7, pc}
|
|
;
|
|
; THUMB-LABEL: opaque_constant1:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: .save {r4, r5, r6, r7, lr}
|
|
; THUMB-NEXT: push {r4, r5, r6, r7, lr}
|
|
; THUMB-NEXT: movs r7, #1
|
|
; THUMB-NEXT: ands r0, r7
|
|
; THUMB-NEXT: subs r1, r0, #1
|
|
; THUMB-NEXT: push {r0}
|
|
; THUMB-NEXT: pop {r4}
|
|
; THUMB-NEXT: sbcs r4, r1
|
|
; THUMB-NEXT: cmp r0, #0
|
|
; THUMB-NEXT: bne .LBB24_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r5, #23
|
|
; THUMB-NEXT: b .LBB24_3
|
|
; THUMB-NEXT: .LBB24_2:
|
|
; THUMB-NEXT: movs r0, #3
|
|
; THUMB-NEXT: mvns r5, r0
|
|
; THUMB-NEXT: .LBB24_3:
|
|
; THUMB-NEXT: ldr r0, .LCPI24_0
|
|
; THUMB-NEXT: ands r5, r0
|
|
; THUMB-NEXT: movs r6, #0
|
|
; THUMB-NEXT: subs r0, r5, #1
|
|
; THUMB-NEXT: push {r4}
|
|
; THUMB-NEXT: pop {r1}
|
|
; THUMB-NEXT: sbcs r1, r6
|
|
; THUMB-NEXT: eors r3, r7
|
|
; THUMB-NEXT: ldr r6, .LCPI24_0
|
|
; THUMB-NEXT: eors r2, r6
|
|
; THUMB-NEXT: orrs r2, r3
|
|
; THUMB-NEXT: beq .LBB24_5
|
|
; THUMB-NEXT: @ %bb.4:
|
|
; THUMB-NEXT: movs r1, r4
|
|
; THUMB-NEXT: .LBB24_5:
|
|
; THUMB-NEXT: cmp r2, #0
|
|
; THUMB-NEXT: beq .LBB24_7
|
|
; THUMB-NEXT: @ %bb.6:
|
|
; THUMB-NEXT: movs r0, r5
|
|
; THUMB-NEXT: .LBB24_7:
|
|
; THUMB-NEXT: pop {r4, r5, r6, r7}
|
|
; THUMB-NEXT: pop {r2}
|
|
; THUMB-NEXT: bx r2
|
|
; THUMB-NEXT: .p2align 2
|
|
; THUMB-NEXT: @ %bb.8:
|
|
; THUMB-NEXT: .LCPI24_0:
|
|
; THUMB-NEXT: .long 65537 @ 0x10001
|
|
%sel = select i1 %cond, i64 -4, i64 23
|
|
%bo = and i64 %sel, 4295032833 ; 0x100010001
|
|
%cmp = icmp eq i64 %x, 4295032833
|
|
%sext = sext i1 %cmp to i64
|
|
%add = add i64 %bo, %sext
|
|
ret i64 %add
|
|
}
|
|
|
|
; 65537 == 0x10001.
|
|
; This becomes an opaque constant via ConstantHoisting, so we don't fold it into the select.
|
|
|
|
define i64 @opaque_constant2(i1 %cond, i64 %x) {
|
|
; ARM-LABEL: opaque_constant2:
|
|
; ARM: @ %bb.0:
|
|
; ARM-NEXT: mov r1, #1
|
|
; ARM-NEXT: tst r0, #1
|
|
; ARM-NEXT: orr r1, r1, #65536
|
|
; ARM-NEXT: moveq r1, #23
|
|
; ARM-NEXT: bic r0, r1, #22
|
|
; ARM-NEXT: mov r1, #0
|
|
; ARM-NEXT: mov pc, lr
|
|
;
|
|
; THUMB2-LABEL: opaque_constant2:
|
|
; THUMB2: @ %bb.0:
|
|
; THUMB2-NEXT: lsls r0, r0, #31
|
|
; THUMB2-NEXT: mov.w r1, #0
|
|
; THUMB2-NEXT: mov.w r0, #1
|
|
; THUMB2-NEXT: it ne
|
|
; THUMB2-NEXT: movne.w r0, #65537
|
|
; THUMB2-NEXT: bx lr
|
|
;
|
|
; THUMB-LABEL: opaque_constant2:
|
|
; THUMB: @ %bb.0:
|
|
; THUMB-NEXT: lsls r0, r0, #31
|
|
; THUMB-NEXT: bne .LBB25_2
|
|
; THUMB-NEXT: @ %bb.1:
|
|
; THUMB-NEXT: movs r0, #23
|
|
; THUMB-NEXT: b .LBB25_3
|
|
; THUMB-NEXT: .LBB25_2:
|
|
; THUMB-NEXT: ldr r0, .LCPI25_0
|
|
; THUMB-NEXT: .LBB25_3:
|
|
; THUMB-NEXT: movs r1, #22
|
|
; THUMB-NEXT: bics r0, r1
|
|
; THUMB-NEXT: movs r1, #0
|
|
; THUMB-NEXT: bx lr
|
|
; THUMB-NEXT: .p2align 2
|
|
; THUMB-NEXT: @ %bb.4:
|
|
; THUMB-NEXT: .LCPI25_0:
|
|
; THUMB-NEXT: .long 65537 @ 0x10001
|
|
%sel = select i1 %cond, i64 65537, i64 23
|
|
%bo = and i64 %sel, 65537
|
|
ret i64 %bo
|
|
}
|
|
|