-; This test makes sure that shit instructions are properly eliminated
+; This test makes sure that shift instructions are properly eliminated
; even with arbitrary precision integers.
+; RUN: opt < %s -instcombine -S | FileCheck %s
-; RUN: llvm-as < %s | opt -instcombine -disable-output &&
-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep sh
-
+; CHECK: @test1
+; CHECK-NOT: sh
define i47 @test1(i47 %A) {
%B = shl i47 %A, 0 ; <i47> [#uses=1]
ret i47 %B
}
+; CHECK: @test2
+; CHECK-NOT: sh
define i41 @test2(i7 %X) {
%A = zext i7 %X to i41 ; <i41> [#uses=1]
%B = shl i41 0, %A ; <i41> [#uses=1]
ret i41 %B
}
+; CHECK: @test3
+; CHECK-NOT: sh
define i41 @test3(i41 %A) {
%B = ashr i41 %A, 0 ; <i41> [#uses=1]
ret i41 %B
}
+; CHECK: @test4
+; CHECK-NOT: sh
define i39 @test4(i7 %X) {
%A = zext i7 %X to i39 ; <i39> [#uses=1]
%B = ashr i39 0, %A ; <i39> [#uses=1]
ret i39 %B
}
+; CHECK: @test5
+; CHECK-NOT: sh
define i55 @test5(i55 %A) {
%B = lshr i55 %A, 55 ; <i55> [#uses=1]
ret i55 %B
}
+; CHECK: @test5a
+; CHECK-NOT: sh
define i32 @test5a(i32 %A) {
%B = shl i32 %A, 32 ; <i32> [#uses=1]
ret i32 %B
}
+; CHECK: @test6
+; CHECK: mul i55 %A, 6
define i55 @test6(i55 %A) {
%B = shl i55 %A, 1 ; <i55> [#uses=1]
%C = mul i55 %B, 3 ; <i55> [#uses=1]
ret i55 %C
}
+; CHECK: @test6a
+; CHECK: mul i55 %A, 6
+define i55 @test6a(i55 %A) {
+ %B = mul i55 %A, 3 ; <i55> [#uses=1]
+ %C = shl i55 %B, 1 ; <i55> [#uses=1]
+ ret i55 %C
+}
+
+; CHECK: @test7
+; CHECK-NOT: sh
define i29 @test7(i8 %X) {
%A = zext i8 %X to i29 ; <i29> [#uses=1]
%B = ashr i29 -1, %A ; <i29> [#uses=1]
ret i29 %B
}
+; CHECK: @test8
+; CHECK-NOT: sh
define i7 @test8(i7 %A) {
%B = shl i7 %A, 4 ; <i7> [#uses=1]
%C = shl i7 %B, 3 ; <i7> [#uses=1]
ret i7 %C
}
+; CHECK: @test9
+; CHECK-NOT: sh
define i17 @test9(i17 %A) {
%B = shl i17 %A, 16 ; <i17> [#uses=1]
%C = lshr i17 %B, 16 ; <i17> [#uses=1]
ret i17 %C
}
+; CHECK: @test10
+; CHECK-NOT: sh
define i19 @test10(i19 %A) {
%B = lshr i19 %A, 18 ; <i19> [#uses=1]
%C = shl i19 %B, 18 ; <i19> [#uses=1]
ret i19 %C
}
+; CHECK: @test11
+; Don't hide the shl from scalar evolution. DAGCombine will get it.
+; CHECK: shl
define i23 @test11(i23 %A) {
%a = mul i23 %A, 3 ; <i23> [#uses=1]
%B = lshr i23 %a, 11 ; <i23> [#uses=1]
ret i23 %C
}
+; CHECK: @test12
+; CHECK-NOT: sh
define i47 @test12(i47 %A) {
%B = ashr i47 %A, 8 ; <i47> [#uses=1]
%C = shl i47 %B, 8 ; <i47> [#uses=1]
ret i47 %C
}
+; CHECK: @test13
+; Don't hide the shl from scalar evolution. DAGCombine will get it.
+; CHECK: shl
define i18 @test13(i18 %A) {
%a = mul i18 %A, 3 ; <i18> [#uses=1]
%B = ashr i18 %a, 8 ; <i18> [#uses=1]
ret i18 %C
}
+; CHECK: @test14
+; CHECK-NOT: sh
define i35 @test14(i35 %A) {
%B = lshr i35 %A, 4 ; <i35> [#uses=1]
%C = or i35 %B, 1234 ; <i35> [#uses=1]
ret i35 %D
}
+; CHECK: @test14a
+; CHECK-NOT: sh
define i79 @test14a(i79 %A) {
%B = shl i79 %A, 4 ; <i79> [#uses=1]
%C = and i79 %B, 1234 ; <i79> [#uses=1]
ret i79 %D
}
+; CHECK: @test15
+; CHECK-NOT: sh
define i45 @test15(i1 %C) {
%A = select i1 %C, i45 3, i45 1 ; <i45> [#uses=1]
%V = shl i45 %A, 2 ; <i45> [#uses=1]
ret i45 %V
}
+; CHECK: @test15a
+; CHECK-NOT: sh
define i53 @test15a(i1 %X) {
%A = select i1 %X, i8 3, i8 1 ; <i8> [#uses=1]
%B = zext i8 %A to i53 ; <i53> [#uses=1]
ret i53 %V
}
+; CHECK: @test16
+; CHECK-NOT: sh
define i1 @test16(i84 %X) {
%tmp.3 = ashr i84 %X, 4 ; <i84> [#uses=1]
%tmp.6 = and i84 %tmp.3, 1 ; <i84> [#uses=1]
ret i1 %tmp.7
}
+; CHECK: @test17
+; CHECK-NOT: sh
define i1 @test17(i106 %A) {
%B = lshr i106 %A, 3 ; <i106> [#uses=1]
%C = icmp eq i106 %B, 1234 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test18
+; CHECK-NOT: sh
define i1 @test18(i11 %A) {
%B = lshr i11 %A, 10 ; <i11> [#uses=1]
%C = icmp eq i11 %B, 123 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test19
+; CHECK-NOT: sh
define i1 @test19(i37 %A) {
%B = ashr i37 %A, 2 ; <i37> [#uses=1]
%C = icmp eq i37 %B, 0 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test19a
+; CHECK-NOT: sh
define i1 @test19a(i39 %A) {
%B = ashr i39 %A, 2 ; <i39> [#uses=1]
%C = icmp eq i39 %B, -1 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test20
+; CHECK-NOT: sh
define i1 @test20(i13 %A) {
%B = ashr i13 %A, 12 ; <i13> [#uses=1]
%C = icmp eq i13 %B, 123 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test21
+; CHECK-NOT: sh
define i1 @test21(i12 %A) {
%B = shl i12 %A, 6 ; <i12> [#uses=1]
%C = icmp eq i12 %B, -128 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test22
+; CHECK-NOT: sh
define i1 @test22(i14 %A) {
%B = shl i14 %A, 7 ; <i14> [#uses=1]
%C = icmp eq i14 %B, 0 ; <i1> [#uses=1]
ret i1 %C
}
+; CHECK: @test23
+; CHECK-NOT: sh
define i11 @test23(i44 %A) {
%B = shl i44 %A, 33 ; <i44> [#uses=1]
%C = ashr i44 %B, 33 ; <i44> [#uses=1]
ret i11 %D
}
-define i17 @test24(i17 %X) {
- %Y = and i17 %X, -5 ; <i17> [#uses=1]
- %Z = shl i17 %Y, 9 ; <i17> [#uses=1]
- %Q = ashr i17 %Z, 9 ; <i17> [#uses=1]
- ret i17 %Q
-}
-
+; CHECK: @test25
+; CHECK-NOT: sh
define i37 @test25(i37 %tmp.2, i37 %AA) {
%x = lshr i37 %AA, 17 ; <i37> [#uses=1]
%tmp.3 = lshr i37 %tmp.2, 17 ; <i37> [#uses=1]
ret i37 %tmp.6
}
+; CHECK: @test26
+; CHECK-NOT: sh
define i40 @test26(i40 %A) {
%B = lshr i40 %A, 1 ; <i40> [#uses=1]
%C = bitcast i40 %B to i40 ; <i40> [#uses=1]
projects / oota-llvm.git / blobdiff