Rename ComputeMaskedBits to computeKnownBits. "Masked" has been

[oota-llvm.git] / test / CodeGen / X86 / divide-by-constant.ll

diff --git a/test/CodeGen/X86/divide-by-constant.ll b/test/CodeGen/X86/divide-by-constant.ll
index 545662fd0ffc82f4acf97ac5cd52f4a33ddf1bbd..21225e340826bca17f1104f61513b03cd13860e1 100644 (file)
--- a/test/CodeGen/X86/divide-by-constant.ll
+++ b/test/CodeGen/X86/divide-by-constant.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mtriple=i686-pc-linux-gnu -asm-verbose=0 | FileCheck %s
+; RUN: llc < %s -mcpu=generic -mtriple=i686-pc-linux-gnu -asm-verbose=0 | FileCheck %s
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
 target triple = "i686-pc-linux-gnu"
 
@@ -6,8 +6,8 @@ define zeroext i16 @test1(i16 zeroext %x) nounwind {
 entry:
        %div = udiv i16 %x, 33
        ret i16 %div
-; CHECK: test1:
-; CHECK: imull $63551, %eax, %eax
+; CHECK-LABEL: test1:
+; CHECK: imull $63551, %eax
 ; CHECK-NEXT: shrl     $21, %eax
 ; CHECK-NEXT: ret
 }
@@ -17,8 +17,8 @@ entry:
   %div = udiv i16 %c, 3
   ret i16 %div
 
-; CHECK: test2:
-; CHECK: imull $43691, %eax, %eax
+; CHECK-LABEL: test2:
+; CHECK: imull $43691, %eax
 ; CHECK-NEXT: shrl     $17, %eax
 ; CHECK-NEXT: ret
 }
@@ -28,9 +28,9 @@ entry:
   %div = udiv i8 %c, 3
   ret i8 %div
 
-; CHECK: test3:
+; CHECK-LABEL: test3:
 ; CHECK: movzbl  8(%esp), %eax
-; CHECK-NEXT: imull    $171, %eax, %eax
+; CHECK-NEXT: imull    $171, %eax
 ; CHECK-NEXT: shrl     $9, %eax
 ; CHECK-NEXT: ret
 }
@@ -39,15 +39,56 @@ define signext i16 @test4(i16 signext %x) nounwind {
 entry:
        %div = sdiv i16 %x, 33          ; <i32> [#uses=1]
        ret i16 %div
-; CHECK: test4:
-; CHECK: imull $-1985, %ecx, %ecx 
+; CHECK-LABEL: test4:
+; CHECK: imull $1986, %eax
 }
 
 define i32 @test5(i32 %A) nounwind {
         %tmp1 = udiv i32 %A, 1577682821         ; <i32> [#uses=1]
         ret i32 %tmp1
-; CHECK: test5:
+; CHECK-LABEL: test5:
 ; CHECK: movl  $365384439, %eax
 ; CHECK: mull  4(%esp)
 }
 
+define signext i16 @test6(i16 signext %x) nounwind {
+entry:
+  %div = sdiv i16 %x, 10
+  ret i16 %div
+; CHECK-LABEL: test6:
+; CHECK: imull $26215, %eax, %ecx
+; CHECK: sarl $18, %ecx
+; CHECK: shrl $15, %eax
+}
+
+define i32 @test7(i32 %x) nounwind {
+  %div = udiv i32 %x, 28
+  ret i32 %div
+; CHECK-LABEL: test7:
+; CHECK: shrl $2
+; CHECK: movl $613566757
+; CHECK: mull
+; CHECK-NOT: shrl
+; CHECK: ret
+}
+
+; PR13326
+define i8 @test8(i8 %x) nounwind {
+  %div = udiv i8 %x, 78
+  ret i8 %div
+; CHECK-LABEL: test8:
+; CHECK: shrb %
+; CHECK: imull $211
+; CHECK: shrl $13
+; CHECK: ret
+}
+
+define i8 @test9(i8 %x) nounwind {
+  %div = udiv i8 %x, 116
+  ret i8 %div
+; CHECK-LABEL: test9:
+; CHECK: shrb $2
+; CHECK: imull $71
+; CHECK: shrl $11
+; CHECK: ret
+}