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-rw-r--r--test/Transforms/InstCombine/2011-05-28-swapmulsub.ll45
1 files changed, 6 insertions, 39 deletions
diff --git a/test/Transforms/InstCombine/2011-05-28-swapmulsub.ll b/test/Transforms/InstCombine/2011-05-28-swapmulsub.ll
index b096d1f952..e4417ef96a 100644
--- a/test/Transforms/InstCombine/2011-05-28-swapmulsub.ll
+++ b/test/Transforms/InstCombine/2011-05-28-swapmulsub.ll
@@ -2,14 +2,18 @@
; RUN: opt -S -instcombine < %s | FileCheck %s
target triple = "x86_64-apple-macosx10.6.6"
-define zeroext i16 @foo1(i32 %on_off) nounwind uwtable ssp {
+define zeroext i16 @foo(i32 %on_off, i16* %puls) nounwind uwtable ssp {
entry:
%on_off.addr = alloca i32, align 4
+ %puls.addr = alloca i16*, align 8
%a = alloca i32, align 4
store i32 %on_off, i32* %on_off.addr, align 4
+ store i16* %puls, i16** %puls.addr, align 8
%tmp = load i32* %on_off.addr, align 4
+; CHECK-NOT: sub
+; CHECK-NOT: mul
+; (1 - %tmp) * (-2) -> (%tmp - 1) * 2
%sub = sub i32 1, %tmp
-; CHECK-NOT: mul i32
%mul = mul i32 %sub, -2
; CHECK: shl
; CHECK-NEXT: add
@@ -18,40 +22,3 @@ entry:
%conv = trunc i32 %tmp1 to i16
ret i16 %conv
}
-
-define zeroext i16 @foo2(i32 %on_off, i32 %q) nounwind uwtable ssp {
-entry:
- %on_off.addr = alloca i32, align 4
- %q.addr = alloca i32, align 4
- %a = alloca i32, align 4
- store i32 %on_off, i32* %on_off.addr, align 4
- store i32 %q, i32* %q.addr, align 4
- %tmp = load i32* %q.addr, align 4
- %tmp1 = load i32* %on_off.addr, align 4
- %sub = sub i32 %tmp, %tmp1
-; CHECK-NOT: mul i32
- %mul = mul i32 %sub, -4
-; CHECK: sub i32
-; CHECK-NEXT: shl
- store i32 %mul, i32* %a, align 4
- %tmp2 = load i32* %a, align 4
- %conv = trunc i32 %tmp2 to i16
- ret i16 %conv
-}
-
-define zeroext i16 @foo3(i32 %on_off) nounwind uwtable ssp {
-entry:
- %on_off.addr = alloca i32, align 4
- %a = alloca i32, align 4
- store i32 %on_off, i32* %on_off.addr, align 4
- %tmp = load i32* %on_off.addr, align 4
- %sub = sub i32 7, %tmp
-; CHECK-NOT: mul i32
- %mul = mul i32 %sub, -4
-; CHECK: shl
-; CHECK-NEXT: add
- store i32 %mul, i32* %a, align 4
- %tmp1 = load i32* %a, align 4
- %conv = trunc i32 %tmp1 to i16
- ret i16 %conv
-}