mirror of
https://github.com/RPCS3/llvm-mirror.git
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484292eaaa
This broke various Windows builds, see comments on the Phabricator review. This also reverts the follow-up 20bf0cf. > Summary: > This fold, helps recover from the rest of the D62266 ARM regressions. > https://rise4fun.com/Alive/TvpC > > Note that while the fold is quite flexible, i've restricted it > to the single interesting pattern at the moment. > > Reviewers: efriedma, craig.topper, spatel, RKSimon, deadalnix > > Reviewed By: deadalnix > > Subscribers: javed.absar, kristof.beyls, llvm-commits > > Tags: #llvm > > Differential Revision: https://reviews.llvm.org/D62450
96 lines
3.2 KiB
LLVM
96 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -O2 -mtriple armv7a < %s | FileCheck --check-prefixes=ARM,ARMV7A %s
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; RUN: llc -O2 -mtriple thumbv6m < %s | FileCheck --check-prefixes=THUMB1,THUMBV6M %s
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; RUN: llc -O2 -mtriple thumbv8m.base < %s | FileCheck --check-prefixes=THUMB1,THUMBV8M-BASE %s
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; RUN: llc -O2 -mtriple thumbv7a < %s | FileCheck --check-prefixes=THUMB,THUMBV7A %s
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; RUN: llc -O2 -mtriple thumbv8m.main < %s | FileCheck --check-prefixes=THUMB,THUMBV8M-MAIN %s
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define void @fn1(i32 %a, i32 %b, i32 %c) local_unnamed_addr #0 {
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; ARM-LABEL: fn1:
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; ARM: @ %bb.0: @ %entry
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; ARM-NEXT: rsb r2, r2, #0
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; ARM-NEXT: adds r0, r1, r0
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; ARM-NEXT: movw r1, #65535
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; ARM-NEXT: sxth r2, r2
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; ARM-NEXT: adc r0, r2, #0
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; ARM-NEXT: uxth r0, r0
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; ARM-NEXT: cmp r0, r1
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; ARM-NEXT: bxeq lr
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; ARM-NEXT: .LBB0_1: @ %for.cond
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; ARM-NEXT: @ =>This Inner Loop Header: Depth=1
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; ARM-NEXT: b .LBB0_1
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;
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; THUMBV6M-LABEL: fn1:
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; THUMBV6M: @ %bb.0: @ %entry
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; THUMBV6M-NEXT: rsbs r2, r2, #0
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; THUMBV6M-NEXT: sxth r2, r2
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; THUMBV6M-NEXT: movs r3, #0
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; THUMBV6M-NEXT: adds r0, r1, r0
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; THUMBV6M-NEXT: adcs r3, r2
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; THUMBV6M-NEXT: uxth r0, r3
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; THUMBV6M-NEXT: ldr r1, .LCPI0_0
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; THUMBV6M-NEXT: cmp r0, r1
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; THUMBV6M-NEXT: beq .LBB0_2
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; THUMBV6M-NEXT: .LBB0_1: @ %for.cond
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; THUMBV6M-NEXT: @ =>This Inner Loop Header: Depth=1
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; THUMBV6M-NEXT: b .LBB0_1
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; THUMBV6M-NEXT: .LBB0_2: @ %if.end
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; THUMBV6M-NEXT: bx lr
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; THUMBV6M-NEXT: .p2align 2
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; THUMBV6M-NEXT: @ %bb.3:
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; THUMBV6M-NEXT: .LCPI0_0:
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; THUMBV6M-NEXT: .long 65535 @ 0xffff
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;
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; THUMBV8M-BASE-LABEL: fn1:
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; THUMBV8M-BASE: @ %bb.0: @ %entry
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; THUMBV8M-BASE-NEXT: rsbs r2, r2, #0
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; THUMBV8M-BASE-NEXT: sxth r2, r2
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; THUMBV8M-BASE-NEXT: movs r3, #0
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; THUMBV8M-BASE-NEXT: adds r0, r1, r0
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; THUMBV8M-BASE-NEXT: adcs r3, r2
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; THUMBV8M-BASE-NEXT: uxth r0, r3
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; THUMBV8M-BASE-NEXT: movw r1, #65535
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; THUMBV8M-BASE-NEXT: cmp r0, r1
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; THUMBV8M-BASE-NEXT: beq .LBB0_2
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; THUMBV8M-BASE-NEXT: .LBB0_1: @ %for.cond
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; THUMBV8M-BASE-NEXT: @ =>This Inner Loop Header: Depth=1
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; THUMBV8M-BASE-NEXT: b .LBB0_1
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; THUMBV8M-BASE-NEXT: .LBB0_2: @ %if.end
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; THUMBV8M-BASE-NEXT: bx lr
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;
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; THUMB-LABEL: fn1:
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; THUMB: @ %bb.0: @ %entry
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; THUMB-NEXT: rsbs r2, r2, #0
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; THUMB-NEXT: adds r0, r0, r1
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; THUMB-NEXT: movw r1, #65535
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; THUMB-NEXT: sxth r2, r2
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; THUMB-NEXT: adc r0, r2, #0
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; THUMB-NEXT: uxth r0, r0
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; THUMB-NEXT: cmp r0, r1
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; THUMB-NEXT: it eq
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; THUMB-NEXT: bxeq lr
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; THUMB-NEXT: .LBB0_1: @ %for.cond
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; THUMB-NEXT: @ =>This Inner Loop Header: Depth=1
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; THUMB-NEXT: b .LBB0_1
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entry:
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%add = add i32 %b, %a
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%cmp = icmp ult i32 %add, %b
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%conv = zext i1 %cmp to i32
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%sub = sub i32 1, %c
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%add1 = add i32 %sub, %conv
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%conv2 = trunc i32 %add1 to i16
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%tobool = icmp eq i16 %conv2, 0
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br i1 %tobool, label %if.end, label %for.cond.preheader
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for.cond.preheader: ; preds = %entry
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br label %for.cond
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for.cond: ; preds = %for.cond.preheader, %for.cond
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br label %for.cond
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if.end: ; preds = %entry
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ret void
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}
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