[PowerPC][NFC] Added test for sext/shl combination after isel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@363118 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/combine-sext-and-shl-after-isel.ll b/test/CodeGen/PowerPC/combine-sext-and-shl-after-isel.ll
new file mode 100644 (file)
index 0000000..1e66489
--- /dev/null
+++ b/test/CodeGen/PowerPC/combine-sext-and-shl-after-isel.ll
@@ -0,0 +1,76 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mcpu=pwr8 -mtriple=powerpc64le-unknown-unknown \
+; RUN:   -ppc-asm-full-reg-names -verify-machineinstrs -O2 < %s | FileCheck %s
+; RUN: llc -mcpu=pwr8 -mtriple=powerpc64-unknown-unknown \
+; RUN:   -ppc-asm-full-reg-names -verify-machineinstrs -O2 < %s | FileCheck %s \
+; RUN:   --check-prefix=CHECK-BE
+; RUN: llc -mcpu=pwr9 -mtriple=powerpc64le-unknown-unknown \
+; RUN:   -ppc-asm-full-reg-names -verify-machineinstrs -O2 < %s | FileCheck %s \
+; RUN:   --check-prefix=CHECK-P9
+; RUN: llc -mcpu=pwr9 -mtriple=powerpc64-unknown-unknown \
+; RUN:   -ppc-asm-full-reg-names -verify-machineinstrs -O2 < %s | FileCheck %s \
+; RUN:   --check-prefix=CHECK-P9-BE
+define dso_local i32 @poc(i32* %base, i32 %index, i1 %flag, i32 %default) {
+; CHECK-LABEL: poc:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    andi. r5, r5, 1
+; CHECK-NEXT:    bc 4, gt, .LBB0_2
+; CHECK-NEXT:  # %bb.1: # %true
+; CHECK-NEXT:    extsw r4, r4
+; CHECK-NEXT:    sldi r4, r4, 2
+; CHECK-NEXT:    lwzx r3, r3, r4
+; CHECK-NEXT:    blr
+; CHECK-NEXT:  .LBB0_2: # %false
+; CHECK-NEXT:    mr r3, r6
+; CHECK-NEXT:    blr
+;
+; CHECK-BE-LABEL: poc:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    andi. r5, r5, 1
+; CHECK-BE-NEXT:    bc 4, gt, .LBB0_2
+; CHECK-BE-NEXT:  # %bb.1: # %true
+; CHECK-BE-NEXT:    extsw r4, r4
+; CHECK-BE-NEXT:    sldi r4, r4, 2
+; CHECK-BE-NEXT:    lwzx r3, r3, r4
+; CHECK-BE-NEXT:    blr
+; CHECK-BE-NEXT:  .LBB0_2: # %false
+; CHECK-BE-NEXT:    mr r3, r6
+; CHECK-BE-NEXT:    blr
+;
+; CHECK-P9-LABEL: poc:
+; CHECK-P9:       # %bb.0: # %entry
+; CHECK-P9-NEXT:    andi. r5, r5, 1
+; CHECK-P9-NEXT:    bc 4, gt, .LBB0_2
+; CHECK-P9-NEXT:  # %bb.1: # %true
+; CHECK-P9-NEXT:    extsw r4, r4
+; CHECK-P9-NEXT:    sldi r4, r4, 2
+; CHECK-P9-NEXT:    lwzx r3, r3, r4
+; CHECK-P9-NEXT:    blr
+; CHECK-P9-NEXT:  .LBB0_2: # %false
+; CHECK-P9-NEXT:    mr r3, r6
+; CHECK-P9-NEXT:    blr
+;
+; CHECK-P9-BE-LABEL: poc:
+; CHECK-P9-BE:       # %bb.0: # %entry
+; CHECK-P9-BE-NEXT:    andi. r5, r5, 1
+; CHECK-P9-BE-NEXT:    bc 4, gt, .LBB0_2
+; CHECK-P9-BE-NEXT:  # %bb.1: # %true
+; CHECK-P9-BE-NEXT:    extsw r4, r4
+; CHECK-P9-BE-NEXT:    sldi r4, r4, 2
+; CHECK-P9-BE-NEXT:    lwzx r3, r3, r4
+; CHECK-P9-BE-NEXT:    blr
+; CHECK-P9-BE-NEXT:  .LBB0_2: # %false
+; CHECK-P9-BE-NEXT:    mr r3, r6
+; CHECK-P9-BE-NEXT:    blr
+entry:
+  %iconv = sext i32 %index to i64
+  br i1 %flag, label %true, label %false
+
+true:
+  %ptr = getelementptr inbounds i32, i32* %base, i64 %iconv
+  %value = load i32, i32* %ptr, align 4
+  ret i32 %value
+
+false:
+  ret i32 %default
+}