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llvm-project/llvm/test/CodeGen/PowerPC/testComparesllless.ll

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[PowerPC] Reverting sequence of patches for elimination of comparison instructions In the past while, I've committed a number of patches in the PowerPC back end aimed at eliminating comparison instructions. However, this causes some failures in proprietary source and these issues are not observed in SPEC or any open source packages I've been able to run. As a result, I'm pulling the entire series and will refactor it to: - Have a single entry point for easy control - Have fine-grained control over which patterns we transform A side-effect of this is that test cases for these patches (and modified by them) are XFAIL-ed. This is a temporary measure as it is counter-productive to remove/modify these test cases and then have to modify them again when the refactored patch is recommitted. The failure will be investigated in parallel to the refactoring effort and the recommit will either have a fix for it or will leave this transformation off by default until the problem is resolved. llvm-svn: 314244
2017-09-27 04:42:47 +08:00
; XFAIL: *
Recommit r310809 with a fix for the spill problem This patch re-commits the patch that was pulled out due to a problem it caused, but with a fix for the problem. The fix was reviewed separately by Eric Christopher and Hal Finkel. Differential Revision: https://reviews.llvm.org/D38054 llvm-svn: 313978
2017-09-22 19:50:25 +08:00
; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -O2 \
; RUN: -ppc-asm-full-reg-names -mcpu=pwr8 < %s | FileCheck %s \
; RUN: --implicit-check-not cmpw --implicit-check-not cmpd --implicit-check-not cmpl
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -O2 \
; RUN: -ppc-asm-full-reg-names -mcpu=pwr8 < %s | FileCheck %s \
; RUN: --implicit-check-not cmpw --implicit-check-not cmpd --implicit-check-not cmpl
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
@glob = common local_unnamed_addr global i16 0, align 2
define i64 @test_llless(i16 signext %a, i16 signext %b) {
; CHECK-LABEL: test_llless:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: sub r3, r4, r3
; CHECK-NEXT: rldicl r3, r3, 1, 63
; CHECK-NEXT: xori r3, r3, 1
; CHECK-NEXT: blr
entry:
%cmp = icmp sle i16 %a, %b
%conv3 = zext i1 %cmp to i64
ret i64 %conv3
}
define i64 @test_llless_sext(i16 signext %a, i16 signext %b) {
; CHECK-LABEL: test_llless_sext:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: sub r3, r4, r3
; CHECK-NEXT: rldicl r3, r3, 1, 63
; CHECK-NEXT: addi r3, r3, -1
; CHECK-NEXT: blr
entry:
%cmp = icmp sle i16 %a, %b
%conv3 = sext i1 %cmp to i64
ret i64 %conv3
}
define void @test_llless_store(i16 signext %a, i16 signext %b) {
; CHECK-LABEL: test_llless_store:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: addis r5, r2, .LC0@toc@ha
; CHECK-NEXT: sub r3, r4, r3
; CHECK-NEXT: ld r12, .LC0@toc@l(r5)
; CHECK-NEXT: rldicl r3, r3, 1, 63
; CHECK-NEXT: xori r3, r3, 1
; CHECK-NEXT: sth r3, 0(r12)
; CHECK-NEXT: blr
entry:
%cmp = icmp sle i16 %a, %b
%conv3 = zext i1 %cmp to i16
store i16 %conv3, i16* @glob, align 2
ret void
}
define void @test_llless_sext_store(i16 signext %a, i16 signext %b) {
; CHECK-LABEL: test_llless_sext_store:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: addis r5, r2, .LC0@toc@ha
; CHECK-NEXT: sub r3, r4, r3
; CHECK-NEXT: ld r12, .LC0@toc@l(r5)
; CHECK-NEXT: rldicl r3, r3, 1, 63
; CHECK-NEXT: addi r3, r3, -1
; CHECK-NEXT: sth r3, 0(r12)
; CHECK-NEXT: blr
entry:
%cmp = icmp sle i16 %a, %b
%conv3 = sext i1 %cmp to i16
store i16 %conv3, i16* @glob, align 2
ret void
}