c4a60c9d34
This is an attempt to reland D42600 and enabling this optimisation by default. This also resolves the issue pointed out in the context of PGO build. Differential Revision: https://reviews.llvm.org/D42600
95 lines
3.5 KiB
LLVM
95 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+mve -verify-machineinstrs -o - %s | FileCheck %s
|
|
|
|
define i32 @test(ptr nocapture readonly %x, ptr nocapture readonly %y, i32 %n) {
|
|
; CHECK-LABEL: test:
|
|
; CHECK: @ %bb.0: @ %entry
|
|
; CHECK-NEXT: cmp r2, #1
|
|
; CHECK-NEXT: itt lt
|
|
; CHECK-NEXT: movlt r0, #0
|
|
; CHECK-NEXT: bxlt lr
|
|
; CHECK-NEXT: .LBB0_1: @ %for.body.preheader
|
|
; CHECK-NEXT: .save {r7, lr}
|
|
; CHECK-NEXT: push {r7, lr}
|
|
; CHECK-NEXT: mov lr, r0
|
|
; CHECK-NEXT: movs r0, #0
|
|
; CHECK-NEXT: .LBB0_2: @ %for.body
|
|
; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: ldrh r3, [r1], #2
|
|
; CHECK-NEXT: subs r2, #1
|
|
; CHECK-NEXT: ldrh r12, [lr], #2
|
|
; CHECK-NEXT: @APP
|
|
; CHECK-NEXT: add r3, r12
|
|
; CHECK-NEXT: @NO_APP
|
|
; CHECK-NEXT: add r0, r3
|
|
; CHECK-NEXT: bne .LBB0_2
|
|
; CHECK-NEXT: @ %bb.3:
|
|
; CHECK-NEXT: pop {r7, pc}
|
|
entry:
|
|
%cmp9 = icmp sgt i32 %n, 0
|
|
br i1 %cmp9, label %for.body, label %for.cond.cleanup
|
|
|
|
for.cond.cleanup: ; preds = %for.body, %entry
|
|
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
|
ret i32 %s.0.lcssa
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
%s.011 = phi i32 [ %add, %for.body ], [ 0, %entry ]
|
|
%i.010 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
|
|
%arrayidx = getelementptr inbounds i16, ptr %x, i32 %i.010
|
|
%0 = load i16, ptr %arrayidx, align 2
|
|
%arrayidx1 = getelementptr inbounds i16, ptr %y, i32 %i.010
|
|
%1 = load i16, ptr %arrayidx1, align 2
|
|
%2 = tail call i32 asm "add $0, $1, $2", "=r,r,r"(i16 %0, i16 %1) #1
|
|
%add = add nsw i32 %2, %s.011
|
|
%inc = add nuw nsw i32 %i.010, 1
|
|
%exitcond.not = icmp eq i32 %inc, %n
|
|
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
|
|
}
|
|
|
|
define i32 @testlr(ptr nocapture readonly %x, ptr nocapture readonly %y, i32 %n) {
|
|
; CHECK-LABEL: testlr:
|
|
; CHECK: @ %bb.0: @ %entry
|
|
; CHECK-NEXT: cmp r2, #1
|
|
; CHECK-NEXT: itt lt
|
|
; CHECK-NEXT: movlt r0, #0
|
|
; CHECK-NEXT: bxlt lr
|
|
; CHECK-NEXT: .LBB1_1: @ %for.body.preheader
|
|
; CHECK-NEXT: .save {r4, lr}
|
|
; CHECK-NEXT: push {r4, lr}
|
|
; CHECK-NEXT: mov r3, r0
|
|
; CHECK-NEXT: movs r0, #0
|
|
; CHECK-NEXT: .LBB1_2: @ %for.body
|
|
; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: ldrh r4, [r1], #2
|
|
; CHECK-NEXT: subs r2, #1
|
|
; CHECK-NEXT: ldrh r12, [r3], #2
|
|
; CHECK-NEXT: @APP
|
|
; CHECK-NEXT: add r4, r12
|
|
; CHECK-NEXT: @NO_APP
|
|
; CHECK-NEXT: add r0, r4
|
|
; CHECK-NEXT: bne .LBB1_2
|
|
; CHECK-NEXT: @ %bb.3:
|
|
; CHECK-NEXT: pop {r4, pc}
|
|
entry:
|
|
%cmp9 = icmp sgt i32 %n, 0
|
|
br i1 %cmp9, label %for.body, label %for.cond.cleanup
|
|
|
|
for.cond.cleanup: ; preds = %for.body, %entry
|
|
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
|
ret i32 %s.0.lcssa
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
%s.011 = phi i32 [ %add, %for.body ], [ 0, %entry ]
|
|
%i.010 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
|
|
%arrayidx = getelementptr inbounds i16, ptr %x, i32 %i.010
|
|
%0 = load i16, ptr %arrayidx, align 2
|
|
%arrayidx1 = getelementptr inbounds i16, ptr %y, i32 %i.010
|
|
%1 = load i16, ptr %arrayidx1, align 2
|
|
%2 = tail call i32 asm "add $0, $1, $2", "=r,r,r,~{lr}"(i16 %0, i16 %1) #1
|
|
%add = add nsw i32 %2, %s.011
|
|
%inc = add nuw nsw i32 %i.010, 1
|
|
%exitcond.not = icmp eq i32 %inc, %n
|
|
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
|
|
}
|