| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| target datalayout = |
| "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| |
| define i32 @test1(i32 %X) { |
| entry: |
| icmp slt i32 %X, 0 ; <i1>:0 [#uses=1] |
| zext i1 %0 to i32 ; <i32>:1 [#uses=1] |
| ret i32 %1 |
| ; CHECK: @test1 |
| ; CHECK: lshr i32 %X, 31 |
| ; CHECK-NEXT: ret i32 |
| } |
| |
| define i32 @test2(i32 %X) { |
| entry: |
| icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1] |
| zext i1 %0 to i32 ; <i32>:1 [#uses=1] |
| ret i32 %1 |
| ; CHECK: @test2 |
| ; CHECK: lshr i32 %X, 31 |
| ; CHECK-NEXT: xor i32 |
| ; CHECK-NEXT: ret i32 |
| } |
| |
| define i32 @test3(i32 %X) { |
| entry: |
| icmp slt i32 %X, 0 ; <i1>:0 [#uses=1] |
| sext i1 %0 to i32 ; <i32>:1 [#uses=1] |
| ret i32 %1 |
| ; CHECK: @test3 |
| ; CHECK: ashr i32 %X, 31 |
| ; CHECK-NEXT: ret i32 |
| } |
| |
| define i32 @test4(i32 %X) { |
| entry: |
| icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1] |
| sext i1 %0 to i32 ; <i32>:1 [#uses=1] |
| ret i32 %1 |
| ; CHECK: @test4 |
| ; CHECK: ashr i32 %X, 31 |
| ; CHECK-NEXT: xor i32 |
| ; CHECK-NEXT: ret i32 |
| } |
| |
| ; PR4837 |
| define <2 x i1> @test5(<2 x i64> %x) { |
| entry: |
| %V = icmp eq <2 x i64> %x, undef |
| ret <2 x i1> %V |
| ; CHECK: @test5 |
| ; CHECK: ret <2 x i1> <i1 true, i1 true> |
| } |
| |
| define i32 @test6(i32 %a, i32 %b) { |
| %c = icmp sle i32 %a, -1 |
| %d = zext i1 %c to i32 |
| %e = sub i32 0, %d |
| %f = and i32 %e, %b |
| ret i32 %f |
| ; CHECK: @test6 |
| ; CHECK-NEXT: ashr i32 %a, 31 |
| ; CHECK-NEXT: %f = and i32 %e, %b |
| ; CHECK-NEXT: ret i32 %f |
| } |
| |
| |
| define i1 @test7(i32 %x) { |
| entry: |
| %a = add i32 %x, -1 |
| %b = icmp ult i32 %a, %x |
| ret i1 %b |
| ; CHECK: @test7 |
| ; CHECK: %b = icmp ne i32 %x, 0 |
| ; CHECK: ret i1 %b |
| } |
| |
| define i1 @test8(i32 %x){ |
| entry: |
| %a = add i32 %x, -1 |
| %b = icmp eq i32 %a, %x |
| ret i1 %b |
| ; CHECK: @test8 |
| ; CHECK: ret i1 false |
| } |
| |
| define i1 @test9(i32 %x) { |
| entry: |
| %a = add i32 %x, -2 |
| %b = icmp ugt i32 %x, %a |
| ret i1 %b |
| ; CHECK: @test9 |
| ; CHECK: icmp ugt i32 %x, 1 |
| ; CHECK: ret i1 %b |
| } |
| |
| define i1 @test10(i32 %x){ |
| entry: |
| %a = add i32 %x, -1 |
| %b = icmp slt i32 %a, %x |
| ret i1 %b |
| |
| ; CHECK: @test10 |
| ; CHECK: %b = icmp ne i32 %x, -2147483648 |
| ; CHECK: ret i1 %b |
| } |
| |
| define i1 @test11(i32 %x) { |
| %a = add nsw i32 %x, 8 |
| %b = icmp slt i32 %x, %a |
| ret i1 %b |
| ; CHECK: @test11 |
| ; CHECK: ret i1 true |
| } |
| |
| ; PR6195 |
| define i1 @test12(i1 %A) { |
| %S = select i1 %A, i64 -4294967295, i64 8589934591 |
| %B = icmp ne i64 bitcast (<2 x i32> <i32 1, i32 -1> to i64), %S |
| ret i1 %B |
| ; CHECK: @test12 |
| ; CHECK-NEXT: = xor i1 %A, true |
| ; CHECK-NEXT: ret i1 |
| } |
| |
| ; PR6481 |
| define i1 @test13(i8 %X) nounwind readnone { |
| entry: |
| %cmp = icmp slt i8 undef, %X |
| ret i1 %cmp |
| ; CHECK: @test13 |
| ; CHECK: ret i1 false |
| } |
| |
| define i1 @test14(i8 %X) nounwind readnone { |
| entry: |
| %cmp = icmp slt i8 undef, -128 |
| ret i1 %cmp |
| ; CHECK: @test14 |
| ; CHECK: ret i1 false |
| } |
| |
| define i1 @test15() nounwind readnone { |
| entry: |
| %cmp = icmp eq i8 undef, -128 |
| ret i1 %cmp |
| ; CHECK: @test15 |
| ; CHECK: ret i1 undef |
| } |
| |
| define i1 @test16() nounwind readnone { |
| entry: |
| %cmp = icmp ne i8 undef, -128 |
| ret i1 %cmp |
| ; CHECK: @test16 |
| ; CHECK: ret i1 undef |
| } |
| |
| define i1 @test17(i32 %x) nounwind { |
| %shl = shl i32 1, %x |
| %and = and i32 %shl, 8 |
| %cmp = icmp eq i32 %and, 0 |
| ret i1 %cmp |
| ; CHECK: @test17 |
| ; CHECK-NEXT: %cmp = icmp ne i32 %x, 3 |
| } |
| |
| |
| define i1 @test18(i32 %x) nounwind { |
| %sh = lshr i32 8, %x |
| %and = and i32 %sh, 1 |
| %cmp = icmp eq i32 %and, 0 |
| ret i1 %cmp |
| ; CHECK: @test18 |
| ; CHECK-NEXT: %cmp = icmp ne i32 %x, 3 |
| } |
| |
| define i1 @test19(i32 %x) nounwind { |
| %shl = shl i32 1, %x |
| %and = and i32 %shl, 8 |
| %cmp = icmp eq i32 %and, 8 |
| ret i1 %cmp |
| ; CHECK: @test19 |
| ; CHECK-NEXT: %cmp = icmp eq i32 %x, 3 |
| } |
| |
| define i1 @test20(i32 %x) nounwind { |
| %shl = shl i32 1, %x |
| %and = and i32 %shl, 8 |
| %cmp = icmp ne i32 %and, 0 |
| ret i1 %cmp |
| ; CHECK: @test20 |
| ; CHECK-NEXT: %cmp = icmp eq i32 %x, 3 |
| } |
| |
| define i1 @test21(i8 %x, i8 %y) { |
| ; CHECK: @test21 |
| ; CHECK-NOT: or i8 |
| ; CHECK: icmp ugt |
| %A = or i8 %x, 1 |
| %B = icmp ugt i8 %A, 3 |
| ret i1 %B |
| } |
| |
| define i1 @test22(i8 %x, i8 %y) { |
| ; CHECK: @test22 |
| ; CHECK-NOT: or i8 |
| ; CHECK: icmp ult |
| %A = or i8 %x, 1 |
| %B = icmp ult i8 %A, 4 |
| ret i1 %B |
| } |
| |
| ; PR2740 |
| ; CHECK: @test23 |
| ; CHECK: icmp sgt i32 %x, 1328634634 |
| define i1 @test23(i32 %x) nounwind { |
| %i3 = sdiv i32 %x, -1328634635 |
| %i4 = icmp eq i32 %i3, -1 |
| ret i1 %i4 |
| } |
| |
| @X = global [1000 x i32] zeroinitializer |
| |
| ; PR8882 |
| ; CHECK: @test24 |
| ; CHECK: %cmp = icmp eq i64 %i, 1000 |
| ; CHECK: ret i1 %cmp |
| define i1 @test24(i64 %i) { |
| %p1 = getelementptr inbounds i32* getelementptr inbounds ([1000 x i32]* @X, i64 0, i64 0), i64 %i |
| %cmp = icmp eq i32* %p1, getelementptr inbounds ([1000 x i32]* @X, i64 1, i64 0) |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @test25 |
| ; X + Z > Y + Z -> X > Y if there is no overflow. |
| ; CHECK: %c = icmp sgt i32 %x, %y |
| ; CHECK: ret i1 %c |
| define i1 @test25(i32 %x, i32 %y, i32 %z) { |
| %lhs = add nsw i32 %x, %z |
| %rhs = add nsw i32 %y, %z |
| %c = icmp sgt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test26 |
| ; X + Z > Y + Z -> X > Y if there is no overflow. |
| ; CHECK: %c = icmp ugt i32 %x, %y |
| ; CHECK: ret i1 %c |
| define i1 @test26(i32 %x, i32 %y, i32 %z) { |
| %lhs = add nuw i32 %x, %z |
| %rhs = add nuw i32 %y, %z |
| %c = icmp ugt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test27 |
| ; X - Z > Y - Z -> X > Y if there is no overflow. |
| ; CHECK: %c = icmp sgt i32 %x, %y |
| ; CHECK: ret i1 %c |
| define i1 @test27(i32 %x, i32 %y, i32 %z) { |
| %lhs = sub nsw i32 %x, %z |
| %rhs = sub nsw i32 %y, %z |
| %c = icmp sgt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test28 |
| ; X - Z > Y - Z -> X > Y if there is no overflow. |
| ; CHECK: %c = icmp ugt i32 %x, %y |
| ; CHECK: ret i1 %c |
| define i1 @test28(i32 %x, i32 %y, i32 %z) { |
| %lhs = sub nuw i32 %x, %z |
| %rhs = sub nuw i32 %y, %z |
| %c = icmp ugt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test29 |
| ; X + Y > X -> Y > 0 if there is no overflow. |
| ; CHECK: %c = icmp sgt i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test29(i32 %x, i32 %y) { |
| %lhs = add nsw i32 %x, %y |
| %c = icmp sgt i32 %lhs, %x |
| ret i1 %c |
| } |
| |
| ; CHECK: @test30 |
| ; X + Y > X -> Y > 0 if there is no overflow. |
| ; CHECK: %c = icmp ne i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test30(i32 %x, i32 %y) { |
| %lhs = add nuw i32 %x, %y |
| %c = icmp ugt i32 %lhs, %x |
| ret i1 %c |
| } |
| |
| ; CHECK: @test31 |
| ; X > X + Y -> 0 > Y if there is no overflow. |
| ; CHECK: %c = icmp slt i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test31(i32 %x, i32 %y) { |
| %rhs = add nsw i32 %x, %y |
| %c = icmp sgt i32 %x, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test32 |
| ; X > X + Y -> 0 > Y if there is no overflow. |
| ; CHECK: ret i1 false |
| define i1 @test32(i32 %x, i32 %y) { |
| %rhs = add nuw i32 %x, %y |
| %c = icmp ugt i32 %x, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test33 |
| ; X - Y > X -> 0 > Y if there is no overflow. |
| ; CHECK: %c = icmp slt i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test33(i32 %x, i32 %y) { |
| %lhs = sub nsw i32 %x, %y |
| %c = icmp sgt i32 %lhs, %x |
| ret i1 %c |
| } |
| |
| ; CHECK: @test34 |
| ; X - Y > X -> 0 > Y if there is no overflow. |
| ; CHECK: ret i1 false |
| define i1 @test34(i32 %x, i32 %y) { |
| %lhs = sub nuw i32 %x, %y |
| %c = icmp ugt i32 %lhs, %x |
| ret i1 %c |
| } |
| |
| ; CHECK: @test35 |
| ; X > X - Y -> Y > 0 if there is no overflow. |
| ; CHECK: %c = icmp sgt i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test35(i32 %x, i32 %y) { |
| %rhs = sub nsw i32 %x, %y |
| %c = icmp sgt i32 %x, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test36 |
| ; X > X - Y -> Y > 0 if there is no overflow. |
| ; CHECK: %c = icmp ne i32 %y, 0 |
| ; CHECK: ret i1 %c |
| define i1 @test36(i32 %x, i32 %y) { |
| %rhs = sub nuw i32 %x, %y |
| %c = icmp ugt i32 %x, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test37 |
| ; X - Y > X - Z -> Z > Y if there is no overflow. |
| ; CHECK: %c = icmp sgt i32 %z, %y |
| ; CHECK: ret i1 %c |
| define i1 @test37(i32 %x, i32 %y, i32 %z) { |
| %lhs = sub nsw i32 %x, %y |
| %rhs = sub nsw i32 %x, %z |
| %c = icmp sgt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; CHECK: @test38 |
| ; X - Y > X - Z -> Z > Y if there is no overflow. |
| ; CHECK: %c = icmp ugt i32 %z, %y |
| ; CHECK: ret i1 %c |
| define i1 @test38(i32 %x, i32 %y, i32 %z) { |
| %lhs = sub nuw i32 %x, %y |
| %rhs = sub nuw i32 %x, %z |
| %c = icmp ugt i32 %lhs, %rhs |
| ret i1 %c |
| } |
| |
| ; PR9343 #1 |
| ; CHECK: @test39 |
| ; CHECK: %B = icmp eq i32 %X, 0 |
| define i1 @test39(i32 %X, i32 %Y) { |
| %A = ashr exact i32 %X, %Y |
| %B = icmp eq i32 %A, 0 |
| ret i1 %B |
| } |
| |
| ; CHECK: @test40 |
| ; CHECK: %B = icmp ne i32 %X, 0 |
| define i1 @test40(i32 %X, i32 %Y) { |
| %A = lshr exact i32 %X, %Y |
| %B = icmp ne i32 %A, 0 |
| ret i1 %B |
| } |
| |
| ; PR9343 #3 |
| ; CHECK: @test41 |
| ; CHECK: ret i1 true |
| define i1 @test41(i32 %X, i32 %Y) { |
| %A = urem i32 %X, %Y |
| %B = icmp ugt i32 %Y, %A |
| ret i1 %B |
| } |
| |
| ; CHECK: @test42 |
| ; CHECK: %B = icmp sgt i32 %Y, -1 |
| define i1 @test42(i32 %X, i32 %Y) { |
| %A = srem i32 %X, %Y |
| %B = icmp slt i32 %A, %Y |
| ret i1 %B |
| } |
| |
| ; CHECK: @test43 |
| ; CHECK: %B = icmp slt i32 %Y, 0 |
| define i1 @test43(i32 %X, i32 %Y) { |
| %A = srem i32 %X, %Y |
| %B = icmp slt i32 %Y, %A |
| ret i1 %B |
| } |
| |
| ; CHECK: @test44 |
| ; CHECK: %B = icmp sgt i32 %Y, -1 |
| define i1 @test44(i32 %X, i32 %Y) { |
| %A = srem i32 %X, %Y |
| %B = icmp slt i32 %A, %Y |
| ret i1 %B |
| } |
| |
| ; CHECK: @test45 |
| ; CHECK: %B = icmp slt i32 %Y, 0 |
| define i1 @test45(i32 %X, i32 %Y) { |
| %A = srem i32 %X, %Y |
| %B = icmp slt i32 %Y, %A |
| ret i1 %B |
| } |
| |
| ; PR9343 #4 |
| ; CHECK: @test46 |
| ; CHECK: %C = icmp ult i32 %X, %Y |
| define i1 @test46(i32 %X, i32 %Y, i32 %Z) { |
| %A = ashr exact i32 %X, %Z |
| %B = ashr exact i32 %Y, %Z |
| %C = icmp ult i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; PR9343 #5 |
| ; CHECK: @test47 |
| ; CHECK: %C = icmp ugt i32 %X, %Y |
| define i1 @test47(i32 %X, i32 %Y, i32 %Z) { |
| %A = ashr exact i32 %X, %Z |
| %B = ashr exact i32 %Y, %Z |
| %C = icmp ugt i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; PR9343 #8 |
| ; CHECK: @test48 |
| ; CHECK: %C = icmp eq i32 %X, %Y |
| define i1 @test48(i32 %X, i32 %Y, i32 %Z) { |
| %A = sdiv exact i32 %X, %Z |
| %B = sdiv exact i32 %Y, %Z |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; PR8469 |
| ; CHECK: @test49 |
| ; CHECK: ret <2 x i1> <i1 true, i1 true> |
| define <2 x i1> @test49(<2 x i32> %tmp3) { |
| entry: |
| %tmp11 = and <2 x i32> %tmp3, <i32 3, i32 3> |
| %cmp = icmp ult <2 x i32> %tmp11, <i32 4, i32 4> |
| ret <2 x i1> %cmp |
| } |
| |
| ; PR9343 #7 |
| ; CHECK: @test50 |
| ; CHECK: ret i1 true |
| define i1 @test50(i16 %X, i32 %Y) { |
| %A = zext i16 %X to i32 |
| %B = srem i32 %A, %Y |
| %C = icmp sgt i32 %B, -1 |
| ret i1 %C |
| } |
| |
| ; CHECK: @test51 |
| ; CHECK: ret i1 %C |
| define i1 @test51(i32 %X, i32 %Y) { |
| %A = and i32 %X, 2147483648 |
| %B = srem i32 %A, %Y |
| %C = icmp sgt i32 %B, -1 |
| ret i1 %C |
| } |
| |
| ; CHECK: @test52 |
| ; CHECK-NEXT: and i32 %x1, 16711935 |
| ; CHECK-NEXT: icmp eq i32 {{.*}}, 4980863 |
| ; CHECK-NEXT: ret i1 |
| define i1 @test52(i32 %x1) nounwind { |
| %conv = and i32 %x1, 255 |
| %cmp = icmp eq i32 %conv, 127 |
| %tmp2 = lshr i32 %x1, 16 |
| %tmp3 = trunc i32 %tmp2 to i8 |
| %cmp15 = icmp eq i8 %tmp3, 76 |
| |
| %A = and i1 %cmp, %cmp15 |
| ret i1 %A |
| } |
| |
| ; PR9838 |
| ; CHECK: @test53 |
| ; CHECK-NEXT: ashr exact |
| ; CHECK-NEXT: ashr |
| ; CHECK-NEXT: icmp |
| define i1 @test53(i32 %a, i32 %b) nounwind { |
| %x = ashr exact i32 %a, 30 |
| %y = ashr i32 %b, 30 |
| %z = icmp eq i32 %x, %y |
| ret i1 %z |
| } |
| |
| ; CHECK: @test54 |
| ; CHECK-NEXT: %and = and i8 %a, -64 |
| ; CHECK-NEXT: icmp eq i8 %and, -128 |
| define i1 @test54(i8 %a) nounwind { |
| %ext = zext i8 %a to i32 |
| %and = and i32 %ext, 192 |
| %ret = icmp eq i32 %and, 128 |
| ret i1 %ret |
| } |
| |
| ; CHECK: @test55 |
| ; CHECK-NEXT: icmp eq i32 %a, -123 |
| define i1 @test55(i32 %a) { |
| %sub = sub i32 0, %a |
| %cmp = icmp eq i32 %sub, 123 |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @test56 |
| ; CHECK-NEXT: icmp eq i32 %a, -113 |
| define i1 @test56(i32 %a) { |
| %sub = sub i32 10, %a |
| %cmp = icmp eq i32 %sub, 123 |
| ret i1 %cmp |
| } |
| |
| ; PR10267 Don't make icmps more expensive when no other inst is subsumed. |
| declare void @foo(i32) |
| ; CHECK: @test57 |
| ; CHECK: %and = and i32 %a, -2 |
| ; CHECK: %cmp = icmp ne i32 %and, 0 |
| define i1 @test57(i32 %a) { |
| %and = and i32 %a, -2 |
| %cmp = icmp ne i32 %and, 0 |
| call void @foo(i32 %and) |
| ret i1 %cmp |
| } |
| |
| ; rdar://problem/10482509 |
| ; CHECK: @cmpabs1 |
| ; CHECK-NEXT: icmp ne |
| define zeroext i1 @cmpabs1(i64 %val) { |
| %sub = sub nsw i64 0, %val |
| %cmp = icmp slt i64 %val, 0 |
| %sub.val = select i1 %cmp, i64 %sub, i64 %val |
| %tobool = icmp ne i64 %sub.val, 0 |
| ret i1 %tobool |
| } |
| |
| ; CHECK: @cmpabs2 |
| ; CHECK-NEXT: icmp ne |
| define zeroext i1 @cmpabs2(i64 %val) { |
| %sub = sub nsw i64 0, %val |
| %cmp = icmp slt i64 %val, 0 |
| %sub.val = select i1 %cmp, i64 %val, i64 %sub |
| %tobool = icmp ne i64 %sub.val, 0 |
| ret i1 %tobool |
| } |
| |
| ; CHECK: @test58 |
| ; CHECK-NEXT: call i32 @test58_d(i64 36029346783166592) |
| define void @test58() nounwind { |
| %cast = bitcast <1 x i64> <i64 36029346783166592> to i64 |
| %call = call i32 @test58_d( i64 %cast) nounwind |
| ret void |
| } |
| declare i32 @test58_d(i64) |
| |
| define i1 @test59(i8* %foo) { |
| %bit = bitcast i8* %foo to i32* |
| %gep1 = getelementptr inbounds i32* %bit, i64 2 |
| %gep2 = getelementptr inbounds i8* %foo, i64 10 |
| %cast1 = bitcast i32* %gep1 to i8* |
| %cmp = icmp ult i8* %cast1, %gep2 |
| %use = ptrtoint i8* %cast1 to i64 |
| %call = call i32 @test58_d(i64 %use) nounwind |
| ret i1 %cmp |
| ; CHECK: @test59 |
| ; CHECK: ret i1 true |
| } |
| |
| define i1 @test60(i8* %foo, i64 %i, i64 %j) { |
| %bit = bitcast i8* %foo to i32* |
| %gep1 = getelementptr inbounds i32* %bit, i64 %i |
| %gep2 = getelementptr inbounds i8* %foo, i64 %j |
| %cast1 = bitcast i32* %gep1 to i8* |
| %cmp = icmp ult i8* %cast1, %gep2 |
| ret i1 %cmp |
| ; CHECK: @test60 |
| ; CHECK-NEXT: %gep1.idx = shl nuw i64 %i, 2 |
| ; CHECK-NEXT: icmp slt i64 %gep1.idx, %j |
| ; CHECK-NEXT: ret i1 |
| } |
| |
| define i1 @test61(i8* %foo, i64 %i, i64 %j) { |
| %bit = bitcast i8* %foo to i32* |
| %gep1 = getelementptr i32* %bit, i64 %i |
| %gep2 = getelementptr i8* %foo, i64 %j |
| %cast1 = bitcast i32* %gep1 to i8* |
| %cmp = icmp ult i8* %cast1, %gep2 |
| ret i1 %cmp |
| ; Don't transform non-inbounds GEPs. |
| ; CHECK: @test61 |
| ; CHECK: icmp ult i8* %cast1, %gep2 |
| ; CHECK-NEXT: ret i1 |
| } |
| |
| define i1 @test62(i8* %a) { |
| %arrayidx1 = getelementptr inbounds i8* %a, i64 1 |
| %arrayidx2 = getelementptr inbounds i8* %a, i64 10 |
| %cmp = icmp slt i8* %arrayidx1, %arrayidx2 |
| ret i1 %cmp |
| ; CHECK: @test62 |
| ; CHECK-NEXT: ret i1 true |
| } |
| |
| define i1 @test63(i8 %a, i32 %b) nounwind { |
| %z = zext i8 %a to i32 |
| %t = and i32 %b, 255 |
| %c = icmp eq i32 %z, %t |
| ret i1 %c |
| ; CHECK: @test63 |
| ; CHECK-NEXT: %1 = trunc i32 %b to i8 |
| ; CHECK-NEXT: %c = icmp eq i8 %1, %a |
| ; CHECK-NEXT: ret i1 %c |
| } |
| |
| define i1 @test64(i8 %a, i32 %b) nounwind { |
| %t = and i32 %b, 255 |
| %z = zext i8 %a to i32 |
| %c = icmp eq i32 %t, %z |
| ret i1 %c |
| ; CHECK: @test64 |
| ; CHECK-NEXT: %1 = trunc i32 %b to i8 |
| ; CHECK-NEXT: %c = icmp eq i8 %1, %a |
| ; CHECK-NEXT: ret i1 %c |
| } |
| |
| define i1 @test65(i64 %A, i64 %B) { |
| %s1 = add i64 %A, %B |
| %s2 = add i64 %A, %B |
| %cmp = icmp eq i64 %s1, %s2 |
| ; CHECK: @test65 |
| ; CHECK-NEXT: ret i1 true |
| ret i1 %cmp |
| } |
| |
| define i1 @test66(i64 %A, i64 %B) { |
| %s1 = add i64 %A, %B |
| %s2 = add i64 %B, %A |
| %cmp = icmp eq i64 %s1, %s2 |
| ; CHECK: @test66 |
| ; CHECK-NEXT: ret i1 true |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @test67 |
| ; CHECK: %and = and i32 %x, 96 |
| ; CHECK: %cmp = icmp ne i32 %and, 0 |
| define i1 @test67(i32 %x) nounwind uwtable { |
| %and = and i32 %x, 127 |
| %cmp = icmp sgt i32 %and, 31 |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @test68 |
| ; CHECK: %cmp = icmp ugt i32 %and, 30 |
| define i1 @test68(i32 %x) nounwind uwtable { |
| %and = and i32 %x, 127 |
| %cmp = icmp sgt i32 %and, 30 |
| ret i1 %cmp |
| } |
| |
| ; PR14708 |
| ; CHECK: @test69 |
| ; CHECK: %1 = and i32 %c, -33 |
| ; CHECK: %2 = icmp eq i32 %1, 65 |
| ; CHECK: ret i1 %2 |
| define i1 @test69(i32 %c) nounwind uwtable { |
| %1 = icmp eq i32 %c, 97 |
| %2 = icmp eq i32 %c, 65 |
| %3 = or i1 %1, %2 |
| ret i1 %3 |
| } |
| |
| ; CHECK: @icmp_sext16trunc |
| ; CHECK-NEXT: %1 = trunc i32 %x to i16 |
| ; CHECK-NEXT: %cmp = icmp slt i16 %1, 36 |
| define i1 @icmp_sext16trunc(i32 %x) { |
| %trunc = trunc i32 %x to i16 |
| %sext = sext i16 %trunc to i32 |
| %cmp = icmp slt i32 %sext, 36 |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @icmp_sext8trunc |
| ; CHECK-NEXT: %1 = trunc i32 %x to i8 |
| ; CHECK-NEXT: %cmp = icmp slt i8 %1, 36 |
| define i1 @icmp_sext8trunc(i32 %x) { |
| %trunc = trunc i32 %x to i8 |
| %sext = sext i8 %trunc to i32 |
| %cmp = icmp slt i32 %sext, 36 |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @icmp_shl16 |
| ; CHECK-NEXT: %1 = trunc i32 %x to i16 |
| ; CHECK-NEXT: %cmp = icmp slt i16 %1, 36 |
| define i1 @icmp_shl16(i32 %x) { |
| %shl = shl i32 %x, 16 |
| %cmp = icmp slt i32 %shl, 2359296 |
| ret i1 %cmp |
| } |
| |
| ; CHECK: @icmp_shl24 |
| ; CHECK-NEXT: %1 = trunc i32 %x to i8 |
| ; CHECK-NEXT: %cmp = icmp slt i8 %1, 36 |
| define i1 @icmp_shl24(i32 %x) { |
| %shl = shl i32 %x, 24 |
| %cmp = icmp slt i32 %shl, 603979776 |
| ret i1 %cmp |
| } |