| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; PR1738 |
| define i1 @test1(double %X, double %Y) { |
| %tmp9 = fcmp ord double %X, 0.000000e+00 |
| %tmp13 = fcmp ord double %Y, 0.000000e+00 |
| %bothcond = and i1 %tmp13, %tmp9 |
| ret i1 %bothcond |
| ; CHECK: fcmp ord double %Y, %X |
| } |
| |
| define i1 @test2(i1 %X, i1 %Y) { |
| %a = and i1 %X, %Y |
| %b = and i1 %a, %X |
| ret i1 %b |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: and i1 %X, %Y |
| ; CHECK-NEXT: ret |
| } |
| |
| define i32 @test3(i32 %X, i32 %Y) { |
| %a = and i32 %X, %Y |
| %b = and i32 %Y, %a |
| ret i32 %b |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: and i32 %X, %Y |
| ; CHECK-NEXT: ret |
| } |
| |
| define i1 @test4(i32 %X) { |
| %a = icmp ult i32 %X, 31 |
| %b = icmp slt i32 %X, 0 |
| %c = and i1 %a, %b |
| ret i1 %c |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: ret i1 false |
| } |
| |
| ; Make sure we don't go into an infinite loop with this test |
| define <4 x i32> @test5(<4 x i32> %A) { |
| %1 = xor <4 x i32> %A, <i32 1, i32 2, i32 3, i32 4> |
| %2 = and <4 x i32> <i32 1, i32 2, i32 3, i32 4>, %1 |
| ret <4 x i32> %2 |
| } |
| |
| ; Check that we combine "if x!=0 && x!=-1" into "if x+1u>1" |
| define i32 @test6(i64 %x) nounwind { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: add i64 %x, 1 |
| ; CHECK-NEXT: icmp ugt i64 %x.off, 1 |
| %cmp1 = icmp ne i64 %x, -1 |
| %not.cmp = icmp ne i64 %x, 0 |
| %.cmp1 = and i1 %cmp1, %not.cmp |
| %land.ext = zext i1 %.cmp1 to i32 |
| ret i32 %land.ext |
| } |
| |
| define i1 @test7(i32 %i, i1 %b) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 %i, 0 |
| ; CHECK-NEXT: [[AND:%.*]] = and i1 [[CMP]], %b |
| ; CHECK-NEXT: ret i1 [[AND]] |
| %cmp1 = icmp slt i32 %i, 1 |
| %cmp2 = icmp sgt i32 %i, -1 |
| %and1 = and i1 %cmp1, %b |
| %and2 = and i1 %and1, %cmp2 |
| ret i1 %and2 |
| } |
| |
| define i1 @test8(i32 %i) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: [[DEC:%.*]] = add i32 %i, -1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[DEC]], 13 |
| ; CHECK-NEXT: ret i1 [[CMP]] |
| %cmp1 = icmp ne i32 %i, 0 |
| %cmp2 = icmp ult i32 %i, 14 |
| %cond = and i1 %cmp1, %cmp2 |
| ret i1 %cond |
| } |