X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FCodeGen%2FAArch64%2Faddsub_ext.ll;h=f30ab89f238bfb448fd80833bee1cb13f2c58c2a;hb=29407e3e04edd682106f420acc84ab69c741faad;hp=2dd16626ea9f2fb7f853164d7d8d5050884be5e7;hpb=7bc8414ee99967cb3a89de663c0510563476aa32;p=oota-llvm.git

diff --git a/test/CodeGen/AArch64/addsub_ext.ll b/test/CodeGen/AArch64/addsub_ext.ll
index 2dd16626ea9..f30ab89f238 100644
--- a/test/CodeGen/AArch64/addsub_ext.ll
+++ b/test/CodeGen/AArch64/addsub_ext.ll
@@ -1,15 +1,15 @@
-; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
+; RUN: llc -verify-machineinstrs %s -o - -mtriple=aarch64-linux-gnu -aarch64-atomic-cfg-tidy=0 | FileCheck %s
 
 @var8 = global i8 0
 @var16 = global i16 0
 @var32 = global i32 0
 @var64 = global i64 0
 
-define void @addsub_i8rhs() {
-; CHECK: addsub_i8rhs:
-    %val8_tmp = load i8* @var8
-    %lhs32 = load i32* @var32
-    %lhs64 = load i64* @var64
+define void @addsub_i8rhs() minsize {
+; CHECK-LABEL: addsub_i8rhs:
+    %val8_tmp = load i8, i8* @var8
+    %lhs32 = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
 
     ; Need this to prevent extension upon load and give a vanilla i8 operand.
     %val8 = add i8 %val8_tmp, 123
@@ -80,11 +80,69 @@ end:
     ret void
 }
 
-define void @addsub_i16rhs() {
-; CHECK: addsub_i16rhs:
-    %val16_tmp = load i16* @var16
-    %lhs32 = load i32* @var32
-    %lhs64 = load i64* @var64
+define void @sub_i8rhs() minsize {
+; CHECK-LABEL: sub_i8rhs:
+    %val8_tmp = load i8, i8* @var8
+    %lhs32 = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
+
+    ; Need this to prevent extension upon load and give a vanilla i8 operand.
+    %val8 = add i8 %val8_tmp, 123
+
+
+; Zero-extending to 32-bits
+    %rhs32_zext = zext i8 %val8 to i32
+    %res32_zext = sub i32 %lhs32, %rhs32_zext
+    store volatile i32 %res32_zext, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, uxtb
+
+   %rhs32_zext_shift = shl i32 %rhs32_zext, 3
+   %res32_zext_shift = sub i32 %lhs32, %rhs32_zext_shift
+   store volatile i32 %res32_zext_shift, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, uxtb #3
+
+
+; Zero-extending to 64-bits
+    %rhs64_zext = zext i8 %val8 to i64
+    %res64_zext = sub i64 %lhs64, %rhs64_zext
+    store volatile i64 %res64_zext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxtb
+
+   %rhs64_zext_shift = shl i64 %rhs64_zext, 1
+   %res64_zext_shift = sub i64 %lhs64, %rhs64_zext_shift
+   store volatile i64 %res64_zext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxtb #1
+
+; Sign-extending to 32-bits
+    %rhs32_sext = sext i8 %val8 to i32
+    %res32_sext = sub i32 %lhs32, %rhs32_sext
+    store volatile i32 %res32_sext, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, sxtb
+
+   %rhs32_sext_shift = shl i32 %rhs32_sext, 1
+   %res32_sext_shift = sub i32 %lhs32, %rhs32_sext_shift
+   store volatile i32 %res32_sext_shift, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, sxtb #1
+
+; Sign-extending to 64-bits
+    %rhs64_sext = sext i8 %val8 to i64
+    %res64_sext = sub i64 %lhs64, %rhs64_sext
+    store volatile i64 %res64_sext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxtb
+
+   %rhs64_sext_shift = shl i64 %rhs64_sext, 4
+   %res64_sext_shift = sub i64 %lhs64, %rhs64_sext_shift
+   store volatile i64 %res64_sext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxtb #4
+
+    ret void
+}
+
+define void @addsub_i16rhs() minsize {
+; CHECK-LABEL: addsub_i16rhs:
+    %val16_tmp = load i16, i16* @var16
+    %lhs32 = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
 
     ; Need this to prevent extension upon load and give a vanilla i16 operand.
     %val16 = add i16 %val16_tmp, 123
@@ -155,13 +213,71 @@ end:
     ret void
 }
 
+define void @sub_i16rhs() minsize {
+; CHECK-LABEL: sub_i16rhs:
+    %val16_tmp = load i16, i16* @var16
+    %lhs32 = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
+
+    ; Need this to prevent extension upon load and give a vanilla i16 operand.
+    %val16 = add i16 %val16_tmp, 123
+
+
+; Zero-extending to 32-bits
+    %rhs32_zext = zext i16 %val16 to i32
+    %res32_zext = sub i32 %lhs32, %rhs32_zext
+    store volatile i32 %res32_zext, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, uxth
+
+   %rhs32_zext_shift = shl i32 %rhs32_zext, 3
+   %res32_zext_shift = sub i32 %lhs32, %rhs32_zext_shift
+   store volatile i32 %res32_zext_shift, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, uxth #3
+
+
+; Zero-extending to 64-bits
+    %rhs64_zext = zext i16 %val16 to i64
+    %res64_zext = sub i64 %lhs64, %rhs64_zext
+    store volatile i64 %res64_zext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxth
+
+   %rhs64_zext_shift = shl i64 %rhs64_zext, 1
+   %res64_zext_shift = sub i64 %lhs64, %rhs64_zext_shift
+   store volatile i64 %res64_zext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxth #1
+
+; Sign-extending to 32-bits
+    %rhs32_sext = sext i16 %val16 to i32
+    %res32_sext = sub i32 %lhs32, %rhs32_sext
+    store volatile i32 %res32_sext, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, sxth
+
+   %rhs32_sext_shift = shl i32 %rhs32_sext, 1
+   %res32_sext_shift = sub i32 %lhs32, %rhs32_sext_shift
+   store volatile i32 %res32_sext_shift, i32* @var32
+; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{w[0-9]+}}, sxth #1
+
+; Sign-extending to 64-bits
+    %rhs64_sext = sext i16 %val16 to i64
+    %res64_sext = sub i64 %lhs64, %rhs64_sext
+    store volatile i64 %res64_sext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxth
+
+   %rhs64_sext_shift = shl i64 %rhs64_sext, 4
+   %res64_sext_shift = sub i64 %lhs64, %rhs64_sext_shift
+   store volatile i64 %res64_sext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxth #4
+
+    ret void
+}
+
 ; N.b. we could probably check more here ("add w2, w3, w1, uxtw" for
 ; example), but the remaining instructions are probably not idiomatic
 ; in the face of "add/sub (shifted register)" so I don't intend to.
-define void @addsub_i32rhs() {
-; CHECK: addsub_i32rhs:
-    %val32_tmp = load i32* @var32
-    %lhs64 = load i64* @var64
+define void @addsub_i32rhs() minsize {
+; CHECK-LABEL: addsub_i32rhs:
+    %val32_tmp = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
 
     %val32 = add i32 %val32_tmp, 123
 
@@ -186,4 +302,34 @@ define void @addsub_i32rhs() {
 ; CHECK: add {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxtw #2
 
     ret void
-}
\ No newline at end of file
+}
+
+define void @sub_i32rhs() minsize {
+; CHECK-LABEL: sub_i32rhs:
+    %val32_tmp = load i32, i32* @var32
+    %lhs64 = load i64, i64* @var64
+
+    %val32 = add i32 %val32_tmp, 123
+
+    %rhs64_zext = zext i32 %val32 to i64
+    %res64_zext = sub i64 %lhs64, %rhs64_zext
+    store volatile i64 %res64_zext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxtw
+
+    %rhs64_zext_shift = shl i64 %rhs64_zext, 2
+    %res64_zext_shift = sub i64 %lhs64, %rhs64_zext_shift
+    store volatile i64 %res64_zext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, uxtw #2
+
+    %rhs64_sext = sext i32 %val32 to i64
+    %res64_sext = sub i64 %lhs64, %rhs64_sext
+    store volatile i64 %res64_sext, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxtw
+
+    %rhs64_sext_shift = shl i64 %rhs64_sext, 2
+    %res64_sext_shift = sub i64 %lhs64, %rhs64_sext_shift
+    store volatile i64 %res64_sext_shift, i64* @var64
+; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{w[0-9]+}}, sxtw #2
+
+    ret void
+}