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llvm-mirror/test/Transforms/InstCombine/phi-equal-incoming-pointers.ll
Nikita Popov 2e044cdb6c [InstCombine] Fix incorrect inbounds on GEP of GEP (PR44425) 
This fixes https://bugs.llvm.org/show_bug.cgi?id=44425. We need to
drop inbounds if one of the GEPs is not inbounds. This was already
done when creating a new GEP, but not when modifying in place.

Differential Revision: https://reviews.llvm.org/D72059
2020-01-01 22:10:55 +01:00

617 lines
24 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=instcombine,verify -S < %s | FileCheck %s --check-prefixes=ALL,INSTCOMBINE
; Make sure GVN won't undo the transformation:
; RUN: opt -passes=instcombine,gvn -S < %s | FileCheck %s --check-prefixes=ALL,INSTCOMBINEGVN
declare i8* @get_ptr.i8()
declare i32* @get_ptr.i32()
declare void @foo.i8(i8*)
declare void @foo.i32(i32*)
define i32 @test_gep_and_bitcast(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep_and_bitcast(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_and_bitcast_arg(i8* %obj, i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep_and_bitcast_arg(
; ALL-NEXT: entry:
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ:%.*]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_and_bitcast_phi(i1 %cond, i1 %cond2, i1 %cond3) {
; ALL-LABEL: @test_gep_and_bitcast_phi(
; ALL-NEXT: entry:
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[OBJ1:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br label [[MERGE:%.*]]
; ALL: bb2:
; ALL-NEXT: [[OBJ2_TYPED:%.*]] = call i32* @get_ptr.i32()
; ALL-NEXT: [[OBJ2:%.*]] = bitcast i32* [[OBJ2_TYPED]] to i8*
; ALL-NEXT: br label [[MERGE]]
; ALL: merge:
; ALL-NEXT: [[OBJ:%.*]] = phi i8* [ [[OBJ1]], [[BB1]] ], [ [[OBJ2]], [[BB2]] ]
; ALL-NEXT: [[ANOTHER_PHI:%.*]] = phi i8* [ [[OBJ1]], [[BB1]] ], [ null, [[BB2]] ]
; ALL-NEXT: call void @foo.i8(i8* [[ANOTHER_PHI]])
; ALL-NEXT: br i1 [[COND2:%.*]], label [[BB3:%.*]], label [[BB4:%.*]]
; ALL: bb3:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb4:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB3]] ], [ [[PTR2_TYPED]], [[BB4]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB3]] ], [ [[PTR2_TYPED]], [[BB4]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND3:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
%obj1 = call i8* @get_ptr.i8()
br label %merge
bb2:
%obj2.typed = call i32* @get_ptr.i32()
%obj2 = bitcast i32* %obj2.typed to i8*
br label %merge
merge:
%obj = phi i8* [ %obj1, %bb1 ], [ %obj2, %bb2 ]
%another_phi = phi i8* [ %obj1, %bb1 ], [ null, %bb2 ]
call void @foo.i8(i8* %another_phi)
br i1 %cond2, label %bb3, label %bb4
bb3:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
br label %exit
bb4:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb3 ], [ %ptr2.typed, %bb4 ]
%res.phi = phi i32 [ %res1, %bb3 ], [ %res2, %bb4 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond3, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_i32ptr(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep_i32ptr(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i32* @get_ptr.i32()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1_TYPED:%.*]] = getelementptr inbounds i32, i32* [[OBJ]], i64 16
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2_TYPED:%.*]] = getelementptr inbounds i32, i32* [[OBJ]], i64 16
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i32* @get_ptr.i32()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1.typed = getelementptr inbounds i32, i32* %obj, i64 16
%res1 = load i32, i32* %ptr1.typed
br label %exit
bb2:
%ptr2.typed = getelementptr inbounds i32, i32* %obj, i64 16
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_and_bitcast_gep_base_ptr(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep_and_bitcast_gep_base_ptr(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ0:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ0]], i64 32
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ0]], i64 32
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj0 = call i8* @get_ptr.i8()
%obj = getelementptr inbounds i8, i8* %obj0, i64 16
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_and_bitcast_same_bb(i1 %cond, i1 %cond2) {
; INSTCOMBINE-LABEL: @test_gep_and_bitcast_same_bb(
; INSTCOMBINE-NEXT: entry:
; INSTCOMBINE-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; INSTCOMBINE-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINE-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; INSTCOMBINE-NEXT: br i1 [[COND:%.*]], label [[EXIT:%.*]], label [[BB2:%.*]]
; INSTCOMBINE: bb2:
; INSTCOMBINE-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINE-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; INSTCOMBINE-NEXT: br label [[EXIT]]
; INSTCOMBINE: exit:
; INSTCOMBINE-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[ENTRY:%.*]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; INSTCOMBINE-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[ENTRY]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; INSTCOMBINE-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; INSTCOMBINE-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; INSTCOMBINE-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; INSTCOMBINE-NEXT: ret i32 [[RES]]
;
; INSTCOMBINEGVN-LABEL: @test_gep_and_bitcast_same_bb(
; INSTCOMBINEGVN-NEXT: entry:
; INSTCOMBINEGVN-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; INSTCOMBINEGVN-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINEGVN-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; INSTCOMBINEGVN-NEXT: br i1 [[COND:%.*]], label [[EXIT:%.*]], label [[BB2:%.*]]
; INSTCOMBINEGVN: bb2:
; INSTCOMBINEGVN-NEXT: br label [[EXIT]]
; INSTCOMBINEGVN: exit:
; INSTCOMBINEGVN-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[PTR1_TYPED]], align 4
; INSTCOMBINEGVN-NEXT: store i32 1, i32* [[PTR1_TYPED]], align 4
; INSTCOMBINEGVN-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; INSTCOMBINEGVN-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
br i1 %cond, label %exit, label %bb2
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %entry ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %entry ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_gep_and_bitcast_same_bb_and_extra_use(i1 %cond, i1 %cond2) {
; INSTCOMBINE-LABEL: @test_gep_and_bitcast_same_bb_and_extra_use(
; INSTCOMBINE-NEXT: entry:
; INSTCOMBINE-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; INSTCOMBINE-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINE-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; INSTCOMBINE-NEXT: call void @foo.i32(i32* nonnull [[PTR1_TYPED]])
; INSTCOMBINE-NEXT: br i1 [[COND:%.*]], label [[EXIT:%.*]], label [[BB2:%.*]]
; INSTCOMBINE: bb2:
; INSTCOMBINE-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINE-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; INSTCOMBINE-NEXT: br label [[EXIT]]
; INSTCOMBINE: exit:
; INSTCOMBINE-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[ENTRY:%.*]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; INSTCOMBINE-NEXT: [[RES_PHI_IN:%.*]] = phi i32* [ [[PTR1_TYPED]], [[ENTRY]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; INSTCOMBINE-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[RES_PHI_IN]], align 4
; INSTCOMBINE-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; INSTCOMBINE-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; INSTCOMBINE-NEXT: ret i32 [[RES]]
;
; INSTCOMBINEGVN-LABEL: @test_gep_and_bitcast_same_bb_and_extra_use(
; INSTCOMBINEGVN-NEXT: entry:
; INSTCOMBINEGVN-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; INSTCOMBINEGVN-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; INSTCOMBINEGVN-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; INSTCOMBINEGVN-NEXT: call void @foo.i32(i32* nonnull [[PTR1_TYPED]])
; INSTCOMBINEGVN-NEXT: br i1 [[COND:%.*]], label [[EXIT:%.*]], label [[BB2:%.*]]
; INSTCOMBINEGVN: bb2:
; INSTCOMBINEGVN-NEXT: br label [[EXIT]]
; INSTCOMBINEGVN: exit:
; INSTCOMBINEGVN-NEXT: [[RES_PHI:%.*]] = load i32, i32* [[PTR1_TYPED]], align 4
; INSTCOMBINEGVN-NEXT: store i32 1, i32* [[PTR1_TYPED]], align 4
; INSTCOMBINEGVN-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; INSTCOMBINEGVN-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
call void @foo.i32(i32* %ptr1.typed)
%res1 = load i32, i32* %ptr1.typed
br i1 %cond, label %exit, label %bb2
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %entry ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %entry ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i8 @test_gep(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i8* [ [[PTR1]], [[BB1]] ], [ [[PTR2]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI_IN:%.*]] = phi i8* [ [[PTR1]], [[BB1]] ], [ [[PTR2]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = load i8, i8* [[RES_PHI_IN]], align 1
; ALL-NEXT: store i8 1, i8* [[PTR_TYPED]], align 1
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i8 [[RES_PHI]], i8 1
; ALL-NEXT: ret i8 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%res1 = load i8, i8* %ptr1
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%res2 = load i8, i8* %ptr2
br label %exit
exit:
%ptr.typed = phi i8* [ %ptr1, %bb1 ], [ %ptr2, %bb2 ]
%res.phi = phi i8 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i8 1, i8* %ptr.typed
%res.load = load i8, i8* %ptr.typed
%res = select i1 %cond2, i8 %res.phi, i8 %res.load
ret i8 %res
}
define i32 @test_extra_uses(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_extra_uses(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: [[RES1:%.*]] = load i32, i32* [[PTR1_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR1_TYPED]])
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: [[RES2:%.*]] = load i32, i32* [[PTR2_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR2_TYPED]])
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = phi i32 [ [[RES1]], [[BB1]] ], [ [[RES2]], [[BB2]] ]
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
call void @foo.i32(i32* %ptr1.typed)
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
call void @foo.i32(i32* %ptr2.typed)
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_extra_uses_non_inbounds(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_extra_uses_non_inbounds(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: [[RES1:%.*]] = load i32, i32* [[PTR1_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR1_TYPED]])
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2]] to i32*
; ALL-NEXT: [[RES2:%.*]] = load i32, i32* [[PTR2_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR2_TYPED]])
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = phi i32 [ [[RES1]], [[BB1]] ], [ [[RES2]], [[BB2]] ]
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
call void @foo.i32(i32* %ptr1.typed)
br label %exit
bb2:
%ptr2 = getelementptr i8, i8* %obj, i64 16
%ptr2.typed = bitcast i8* %ptr2 to i32*
%res2 = load i32, i32* %ptr2.typed
call void @foo.i32(i32* %ptr2.typed)
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i32 @test_extra_uses_multiple_geps(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_extra_uses_multiple_geps(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR1_TYPED:%.*]] = bitcast i8* [[PTR1]] to i32*
; ALL-NEXT: [[RES1:%.*]] = load i32, i32* [[PTR1_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR1_TYPED]])
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2_1:%.*]] = getelementptr i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[PTR2_TYPED:%.*]] = bitcast i8* [[PTR2_1]] to i32*
; ALL-NEXT: [[RES2:%.*]] = load i32, i32* [[PTR2_TYPED]], align 4
; ALL-NEXT: call void @foo.i32(i32* nonnull [[PTR2_TYPED]])
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i32* [ [[PTR1_TYPED]], [[BB1]] ], [ [[PTR2_TYPED]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = phi i32 [ [[RES1]], [[BB1]] ], [ [[RES2]], [[BB2]] ]
; ALL-NEXT: store i32 1, i32* [[PTR_TYPED]], align 4
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i32 [[RES_PHI]], i32 1
; ALL-NEXT: ret i32 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%ptr1.typed = bitcast i8* %ptr1 to i32*
%res1 = load i32, i32* %ptr1.typed
call void @foo.i32(i32* %ptr1.typed)
br label %exit
bb2:
%ptr2.0 = getelementptr i8, i8* %obj, i64 8
%ptr2.1 = getelementptr inbounds i8, i8* %ptr2.0, i64 8
%ptr2.typed = bitcast i8* %ptr2.1 to i32*
%res2 = load i32, i32* %ptr2.typed
call void @foo.i32(i32* %ptr2.typed)
br label %exit
exit:
%ptr.typed = phi i32* [ %ptr1.typed, %bb1 ], [ %ptr2.typed, %bb2 ]
%res.phi = phi i32 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i32 1, i32* %ptr.typed
%res.load = load i32, i32* %ptr.typed
%res = select i1 %cond2, i32 %res.phi, i32 %res.load
ret i32 %res
}
define i8 @test_gep_extra_uses(i1 %cond, i1 %cond2) {
; ALL-LABEL: @test_gep_extra_uses(
; ALL-NEXT: entry:
; ALL-NEXT: [[OBJ:%.*]] = call i8* @get_ptr.i8()
; ALL-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; ALL: bb1:
; ALL-NEXT: [[PTR1:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[RES1:%.*]] = load i8, i8* [[PTR1]], align 1
; ALL-NEXT: call void @foo.i8(i8* nonnull [[PTR1]])
; ALL-NEXT: br label [[EXIT:%.*]]
; ALL: bb2:
; ALL-NEXT: [[PTR2:%.*]] = getelementptr inbounds i8, i8* [[OBJ]], i64 16
; ALL-NEXT: [[RES2:%.*]] = load i8, i8* [[PTR2]], align 1
; ALL-NEXT: call void @foo.i8(i8* nonnull [[PTR2]])
; ALL-NEXT: br label [[EXIT]]
; ALL: exit:
; ALL-NEXT: [[PTR_TYPED:%.*]] = phi i8* [ [[PTR1]], [[BB1]] ], [ [[PTR2]], [[BB2]] ]
; ALL-NEXT: [[RES_PHI:%.*]] = phi i8 [ [[RES1]], [[BB1]] ], [ [[RES2]], [[BB2]] ]
; ALL-NEXT: store i8 1, i8* [[PTR_TYPED]], align 1
; ALL-NEXT: [[RES:%.*]] = select i1 [[COND2:%.*]], i8 [[RES_PHI]], i8 1
; ALL-NEXT: ret i8 [[RES]]
;
entry:
%obj = call i8* @get_ptr.i8()
br i1 %cond, label %bb1, label %bb2
bb1:
%ptr1 = getelementptr inbounds i8, i8* %obj, i64 16
%res1 = load i8, i8* %ptr1
call void @foo.i8(i8* %ptr1)
br label %exit
bb2:
%ptr2 = getelementptr inbounds i8, i8* %obj, i64 16
%res2 = load i8, i8* %ptr2
call void @foo.i8(i8* %ptr2)
br label %exit
exit:
%ptr.typed = phi i8* [ %ptr1, %bb1 ], [ %ptr2, %bb2 ]
%res.phi = phi i8 [ %res1, %bb1 ], [ %res2, %bb2 ]
store i8 1, i8* %ptr.typed
%res.load = load i8, i8* %ptr.typed
%res = select i1 %cond2, i8 %res.phi, i8 %res.load
ret i8 %res
}
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