diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine')
-rw-r--r-- | llvm/test/Transforms/InstCombine/implies.ll | 440 |
1 files changed, 440 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/implies.ll b/llvm/test/Transforms/InstCombine/implies.ll new file mode 100644 index 0000000..6741d59 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/implies.ll @@ -0,0 +1,440 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -passes=instcombine -S | FileCheck %s + +define i1 @or_implies_sle(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @or_implies_sle( +; CHECK-NEXT: [[OR:%.*]] = or i8 [[X:%.*]], 23 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[OR]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %or = or i8 %x, 23 + %cond = icmp sle i8 %or, %y + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @or_implies_sle_fail(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @or_implies_sle_fail( +; CHECK-NEXT: [[OR:%.*]] = or i8 [[X:%.*]], -34 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[OR]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %or = or i8 %x, -34 + %cond = icmp sle i8 %or, %y + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @or_distjoint_implies_ule(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @or_distjoint_implies_ule( +; CHECK-NEXT: [[X2:%.*]] = or disjoint i8 [[X:%.*]], 24 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = or disjoint i8 [[X]], 23 +; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = or disjoint i8 %x, 23 + %x2 = or disjoint i8 %x, 24 + + %cond = icmp ule i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp ule i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @or_distjoint_implies_ule_fail(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @or_distjoint_implies_ule_fail( +; CHECK-NEXT: [[X2:%.*]] = or disjoint i8 [[X:%.*]], 24 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = or disjoint i8 [[X]], 28 +; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = or disjoint i8 %x, 28 + %x2 = or disjoint i8 %x, 24 + + %cond = icmp ule i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp ule i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @or_prove_distjoin_implies_ule(i8 %xx, i8 %y, i1 %other) { +; CHECK-LABEL: @or_prove_distjoin_implies_ule( +; CHECK-NEXT: [[X:%.*]] = and i8 [[XX:%.*]], -16 +; CHECK-NEXT: [[X2:%.*]] = or disjoint i8 [[X]], 10 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: ret i1 true +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x = and i8 %xx, -16 + %x1 = or i8 %x, 7 + %x2 = or i8 %x, 10 + + %cond = icmp ule i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp ule i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_or_distjoint_implies_sle(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @src_or_distjoint_implies_sle( +; CHECK-NEXT: [[X2:%.*]] = or disjoint i8 [[X:%.*]], 24 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = or disjoint i8 [[X]], 23 +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = or disjoint i8 %x, 23 + %x2 = or disjoint i8 %x, 24 + + %cond = icmp sle i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_or_distjoint_implies_sle_fail(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @src_or_distjoint_implies_sle_fail( +; CHECK-NEXT: [[X2:%.*]] = or disjoint i8 [[X:%.*]], 24 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp slt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = or disjoint i8 [[X]], 23 +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = or disjoint i8 %x, 23 + %x2 = or disjoint i8 %x, 24 + + %cond = icmp sle i8 %y, %x2 + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_addnsw_implies_sle(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @src_addnsw_implies_sle( +; CHECK-NEXT: [[X2:%.*]] = add nsw i8 [[X:%.*]], 24 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = add nsw i8 [[X]], 23 +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = add nsw i8 %x, 23 + %x2 = add nsw i8 %x, 24 + + %cond = icmp sle i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_addnsw_implies_sle_fail(i8 %x, i8 %y, i1 %other) { +; CHECK-LABEL: @src_addnsw_implies_sle_fail( +; CHECK-NEXT: [[X2:%.*]] = add nsw i8 [[X:%.*]], 23 +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[X2]], [[Y:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[X1:%.*]] = add nsw i8 [[X]], 24 +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X1]], [[Y]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %x1 = add nsw i8 %x, 24 + %x2 = add nsw i8 %x, 23 + + %cond = icmp sle i8 %x2, %y + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x1, %y + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_and_implies_ult(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_and_implies_ult( +; CHECK-NEXT: [[COND:%.*]] = icmp ult i8 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[F:%.*]] +; CHECK: T: +; CHECK-NEXT: [[AND:%.*]] = and i8 [[Z]], [[X]] +; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[AND]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp ult i8 %x, %z + br i1 %cond, label %T, label %F +T: + %and = and i8 %z, %x + %r = icmp ult i8 %and, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_and_implies_ult_fail(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_and_implies_ult_fail( +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[AND:%.*]] = and i8 [[X]], [[Z]] +; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[AND]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp ule i8 %x, %z + br i1 %cond, label %T, label %F +T: + %and = and i8 %x, %z + %r = icmp ult i8 %and, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_and_implies_slt_fail(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_and_implies_slt_fail( +; CHECK-NEXT: [[COND:%.*]] = icmp slt i8 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[F:%.*]] +; CHECK: T: +; CHECK-NEXT: [[AND:%.*]] = and i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[AND]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp slt i8 %x, %z + br i1 %cond, label %T, label %F +T: + %and = and i8 %x, %y + %r = icmp slt i8 %and, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_or_implies_ule(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_or_implies_ule( +; CHECK-NEXT: [[OR:%.*]] = or i8 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[OR]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %or = or i8 %y, %x + %cond = icmp uge i8 %z, %or + br i1 %cond, label %T, label %F +T: + %r = icmp ule i8 %x, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_or_implies_false_ugt_todo(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_or_implies_false_ugt_todo( +; CHECK-NEXT: [[OR:%.*]] = or i8 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[COND:%.*]] = icmp ugt i8 [[OR]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[F:%.*]] +; CHECK: T: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; CHECK: F: +; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[X]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; + %or = or i8 %x, %y + %cond = icmp ugt i8 %or, %z + br i1 %cond, label %T, label %F +T: + ret i1 %other +F: + %r = icmp ugt i8 %x, %z + ret i1 %r + +} + +define i1 @src_udiv_implies_ult(i8 %x, i8 %z, i1 %other) { +; CHECK-LABEL: @src_udiv_implies_ult( +; CHECK-NEXT: [[COND:%.*]] = icmp ugt i8 [[Z:%.*]], [[X:%.*]] +; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[F:%.*]] +; CHECK: T: +; CHECK-NEXT: [[AND:%.*]] = udiv i8 [[X]], 3 +; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[AND]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp ugt i8 %z, %x + br i1 %cond, label %T, label %F +T: + %and = udiv i8 %x, 3 + %r = icmp ult i8 %and, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_udiv_implies_ult2(i8 %x, i8 %z, i1 %other) { +; CHECK-LABEL: @src_udiv_implies_ult2( +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[Z:%.*]], [[X:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; CHECK: F: +; CHECK-NEXT: [[AND:%.*]] = udiv i8 [[X]], 3 +; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[AND]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; + %cond = icmp ule i8 %z, %x + br i1 %cond, label %T, label %F +T: + ret i1 %other +F: + %and = udiv i8 %x, 3 + %r = icmp ult i8 %and, %z + ret i1 %r +} + +define i1 @src_smin_implies_sle(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_smin_implies_sle( +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: ret i1 true +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp sle i8 %x, %z + br i1 %cond, label %T, label %F +T: + %um = call i8 @llvm.smin.i8(i8 %x, i8 %y) + %r = icmp sle i8 %um, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_umin_implies_ule(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_umin_implies_ule( +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: ret i1 true +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %cond = icmp ule i8 %x, %z + br i1 %cond, label %T, label %F +T: + %um = call i8 @llvm.umin.i8(i8 %x, i8 %y) + %r = icmp ule i8 %um, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_umax_implies_ule(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_umax_implies_ule( +; CHECK-NEXT: [[UM:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]]) +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ugt i8 [[UM]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %um = call i8 @llvm.umax.i8(i8 %x, i8 %y) + %cond = icmp ule i8 %um, %z + br i1 %cond, label %T, label %F +T: + %r = icmp ule i8 %x, %z + ret i1 %r +F: + ret i1 %other +} + +define i1 @src_smax_implies_sle(i8 %x, i8 %y, i8 %z, i1 %other) { +; CHECK-LABEL: @src_smax_implies_sle( +; CHECK-NEXT: [[UM:%.*]] = call i8 @llvm.smax.i8(i8 [[X:%.*]], i8 [[Y:%.*]]) +; CHECK-NEXT: [[COND_NOT:%.*]] = icmp sgt i8 [[UM]], [[Z:%.*]] +; CHECK-NEXT: br i1 [[COND_NOT]], label [[F:%.*]], label [[T:%.*]] +; CHECK: T: +; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X]], [[Z]] +; CHECK-NEXT: ret i1 [[R]] +; CHECK: F: +; CHECK-NEXT: ret i1 [[OTHER:%.*]] +; + %um = call i8 @llvm.smax.i8(i8 %x, i8 %y) + %cond = icmp sle i8 %um, %z + br i1 %cond, label %T, label %F +T: + %r = icmp sle i8 %x, %z + ret i1 %r +F: + ret i1 %other +} |