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[InstCombine] add tests for casted phi; NFC

This commit is contained in:
Sanjay Patel 2020-02-03 11:54:12 -05:00
parent bdfcdb1fb3
commit b2e884bee7
1 changed files with 142 additions and 0 deletions
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142
llvm/test/Transforms/InstCombine/cast_phi.ll
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@ -2,6 +2,8 @@
; RUN: opt < %s -instcombine -S | FileCheck %s
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
target datalayout = "n32:64"
define void @MainKernel(i32 %iNumSteps, i32 %tid, i32 %base) {
; CHECK-LABEL: @MainKernel(
; CHECK-NEXT: [[CALLA:%.*]] = alloca [258 x float], align 4
@ -171,3 +173,143 @@ define void @MainKernel(i32 %iNumSteps, i32 %tid, i32 %base) {
%cmp13 = icmp sgt i32 %sub, 0
br i1 %cmp13, label %.bb3, label %.bb8
}
declare i32 @get_i32()
declare i3 @get_i3()
declare void @bar()
define i37 @zext_from_legal_to_illegal_type(i32 %x) {
; CHECK-LABEL: @zext_from_legal_to_illegal_type(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 42
; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: [[Y:%.*]] = call i32 @get_i32()
; CHECK-NEXT: [[PHITMP:%.*]] = zext i32 [[Y]] to i37
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: f:
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i37 [ [[PHITMP]], [[T]] ], [ 3, [[F]] ]
; CHECK-NEXT: ret i37 [[P]]
;
entry:
%cmp = icmp eq i32 %x, 42
br i1 %cmp, label %t, label %f
t:
%y = call i32 @get_i32()
br label %exit
f:
call void @bar()
br label %exit
exit:
%p = phi i32 [ %y, %t ], [ 3, %f ]
%r = zext i32 %p to i37
ret i37 %r
}
define i37 @zext_from_illegal_to_illegal_type(i32 %x) {
; CHECK-LABEL: @zext_from_illegal_to_illegal_type(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 42
; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: [[Y:%.*]] = call i3 @get_i3()
; CHECK-NEXT: [[PHITMP:%.*]] = zext i3 [[Y]] to i37
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: f:
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i37 [ [[PHITMP]], [[T]] ], [ 3, [[F]] ]
; CHECK-NEXT: ret i37 [[P]]
;
entry:
%cmp = icmp eq i32 %x, 42
br i1 %cmp, label %t, label %f
t:
%y = call i3 @get_i3()
br label %exit
f:
call void @bar()
br label %exit
exit:
%p = phi i3 [ %y, %t ], [ 3, %f ]
%r = zext i3 %p to i37
ret i37 %r
}
define i64 @zext_from_legal_to_legal_type(i32 %x) {
; CHECK-LABEL: @zext_from_legal_to_legal_type(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 42
; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: [[Y:%.*]] = call i32 @get_i32()
; CHECK-NEXT: [[PHITMP:%.*]] = zext i32 [[Y]] to i64
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: f:
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i64 [ [[PHITMP]], [[T]] ], [ 3, [[F]] ]
; CHECK-NEXT: ret i64 [[P]]
;
entry:
%cmp = icmp eq i32 %x, 42
br i1 %cmp, label %t, label %f
t:
%y = call i32 @get_i32()
br label %exit
f:
call void @bar()
br label %exit
exit:
%p = phi i32 [ %y, %t ], [ 3, %f ]
%r = zext i32 %p to i64
ret i64 %r
}
define i64 @zext_from_illegal_to_legal_type(i32 %x) {
; CHECK-LABEL: @zext_from_illegal_to_legal_type(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 42
; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: [[Y:%.*]] = call i3 @get_i3()
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: f:
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i3 [ [[Y]], [[T]] ], [ 3, [[F]] ]
; CHECK-NEXT: [[R:%.*]] = zext i3 [[P]] to i64
; CHECK-NEXT: ret i64 [[R]]
;
entry:
%cmp = icmp eq i32 %x, 42
br i1 %cmp, label %t, label %f
t:
%y = call i3 @get_i3()
br label %exit
f:
call void @bar()
br label %exit
exit:
%p = phi i3 [ %y, %t ], [ 3, %f ]
%r = zext i3 %p to i64
ret i64 %r
}