forked from OSchip/llvm-project
248 lines
9.1 KiB
LLVM
248 lines
9.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:40:64:64:32-p1:16:16:16-p2:32:32:32-p3:64:64:64-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"
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declare i32 @test58_d(i64 )
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define i1 @test59(i8* %foo) {
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; CHECK-LABEL: @test59(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i8, i8* [[FOO:%.*]], i32 8
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[GEP1]] to i32
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; CHECK-NEXT: [[USE:%.*]] = zext i32 [[TMP1]] to i64
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @test58_d(i64 [[USE]])
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; CHECK-NEXT: ret i1 true
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;
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%bit = bitcast i8* %foo to i32*
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%gep1 = getelementptr inbounds i32, i32* %bit, i64 2
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 10
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%cast1 = bitcast i32* %gep1 to i8*
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%cmp = icmp ult i8* %cast1, %gep2
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%use = ptrtoint i8* %cast1 to i64
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%call = call i32 @test58_d(i64 %use)
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ret i1 %cmp
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}
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define i1 @test59_as1(i8 addrspace(1)* %foo) {
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; CHECK-LABEL: @test59_as1(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i8, i8 addrspace(1)* [[FOO:%.*]], i16 8
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint i8 addrspace(1)* [[GEP1]] to i16
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; CHECK-NEXT: [[USE:%.*]] = zext i16 [[TMP1]] to i64
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @test58_d(i64 [[USE]])
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; CHECK-NEXT: ret i1 true
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;
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%bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
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%gep1 = getelementptr inbounds i32, i32 addrspace(1)* %bit, i64 2
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%gep2 = getelementptr inbounds i8, i8 addrspace(1)* %foo, i64 10
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%cast1 = bitcast i32 addrspace(1)* %gep1 to i8 addrspace(1)*
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%cmp = icmp ult i8 addrspace(1)* %cast1, %gep2
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%use = ptrtoint i8 addrspace(1)* %cast1 to i64
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%call = call i32 @test58_d(i64 %use)
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ret i1 %cmp
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}
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define i1 @test60(i8* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test60(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[I:%.*]] to i32
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; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[J:%.*]] to i32
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; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nuw i32 [[TMP1]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = icmp slt i32 [[GEP1_IDX]], [[TMP2]]
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; CHECK-NEXT: ret i1 [[TMP3]]
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;
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%bit = bitcast i8* %foo to i32*
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%gep1 = getelementptr inbounds i32, i32* %bit, i64 %i
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
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%cast1 = bitcast i32* %gep1 to i8*
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%cmp = icmp ult i8* %cast1, %gep2
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ret i1 %cmp
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}
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define i1 @test60_as1(i8 addrspace(1)* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test60_as1(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[I:%.*]] to i16
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; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[J:%.*]] to i16
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; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nuw i16 [[TMP1]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = icmp slt i16 [[GEP1_IDX]], [[TMP2]]
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; CHECK-NEXT: ret i1 [[TMP3]]
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;
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%bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
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%gep1 = getelementptr inbounds i32, i32 addrspace(1)* %bit, i64 %i
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%gep2 = getelementptr inbounds i8, i8 addrspace(1)* %foo, i64 %j
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%cast1 = bitcast i32 addrspace(1)* %gep1 to i8 addrspace(1)*
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%cmp = icmp ult i8 addrspace(1)* %cast1, %gep2
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ret i1 %cmp
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}
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; Same as test60, but look through an addrspacecast instead of a
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; bitcast. This uses the same sized addrspace.
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define i1 @test60_addrspacecast(i8* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test60_addrspacecast(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[J:%.*]] to i32
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; CHECK-NEXT: [[I_TR:%.*]] = trunc i64 [[I:%.*]] to i32
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; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[I_TR]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = icmp slt i32 [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret i1 [[TMP3]]
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;
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%bit = addrspacecast i8* %foo to i32 addrspace(3)*
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%gep1 = getelementptr inbounds i32, i32 addrspace(3)* %bit, i64 %i
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
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%cast1 = addrspacecast i32 addrspace(3)* %gep1 to i8*
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%cmp = icmp ult i8* %cast1, %gep2
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ret i1 %cmp
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}
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define i1 @test60_addrspacecast_smaller(i8* %foo, i16 %i, i64 %j) {
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; CHECK-LABEL: @test60_addrspacecast_smaller(
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; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nuw i16 [[I:%.*]], 2
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[J:%.*]] to i16
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i16 [[GEP1_IDX]], [[TMP1]]
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%bit = addrspacecast i8* %foo to i32 addrspace(1)*
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%gep1 = getelementptr inbounds i32, i32 addrspace(1)* %bit, i16 %i
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
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%cast1 = addrspacecast i32 addrspace(1)* %gep1 to i8*
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%cmp = icmp ult i8* %cast1, %gep2
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ret i1 %cmp
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}
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define i1 @test60_addrspacecast_larger(i8 addrspace(1)* %foo, i32 %i, i16 %j) {
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; CHECK-LABEL: @test60_addrspacecast_larger(
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; CHECK-NEXT: [[I_TR:%.*]] = trunc i32 [[I:%.*]] to i16
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; CHECK-NEXT: [[TMP1:%.*]] = shl i16 [[I_TR]], 2
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i16 [[TMP1]], [[J:%.*]]
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%bit = addrspacecast i8 addrspace(1)* %foo to i32 addrspace(2)*
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%gep1 = getelementptr inbounds i32, i32 addrspace(2)* %bit, i32 %i
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%gep2 = getelementptr inbounds i8, i8 addrspace(1)* %foo, i16 %j
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%cast1 = addrspacecast i32 addrspace(2)* %gep1 to i8 addrspace(1)*
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%cmp = icmp ult i8 addrspace(1)* %cast1, %gep2
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ret i1 %cmp
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}
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define i1 @test61(i8* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test61(
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; CHECK-NEXT: [[BIT:%.*]] = bitcast i8* [[FOO:%.*]] to i32*
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[I:%.*]] to i32
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, i32* [[BIT]], i32 [[TMP1]]
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; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[J:%.*]] to i32
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i8, i8* [[FOO]], i32 [[TMP2]]
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; CHECK-NEXT: [[CAST1:%.*]] = bitcast i32* [[GEP1]] to i8*
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8* [[GEP2]], [[CAST1]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%bit = bitcast i8* %foo to i32*
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%gep1 = getelementptr i32, i32* %bit, i64 %i
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%gep2 = getelementptr i8, i8* %foo, i64 %j
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%cast1 = bitcast i32* %gep1 to i8*
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%cmp = icmp ult i8* %cast1, %gep2
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ret i1 %cmp
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; Don't transform non-inbounds GEPs.
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}
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define i1 @test61_as1(i8 addrspace(1)* %foo, i16 %i, i16 %j) {
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; CHECK-LABEL: @test61_as1(
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; CHECK-NEXT: [[BIT:%.*]] = bitcast i8 addrspace(1)* [[FOO:%.*]] to i32 addrspace(1)*
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, i32 addrspace(1)* [[BIT]], i16 [[I:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i8, i8 addrspace(1)* [[FOO]], i16 [[J:%.*]]
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; CHECK-NEXT: [[CAST1:%.*]] = bitcast i32 addrspace(1)* [[GEP1]] to i8 addrspace(1)*
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8 addrspace(1)* [[GEP2]], [[CAST1]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
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%gep1 = getelementptr i32, i32 addrspace(1)* %bit, i16 %i
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%gep2 = getelementptr i8, i8 addrspace(1)* %foo, i16 %j
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%cast1 = bitcast i32 addrspace(1)* %gep1 to i8 addrspace(1)*
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%cmp = icmp ult i8 addrspace(1)* %cast1, %gep2
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ret i1 %cmp
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; Don't transform non-inbounds GEPs.
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}
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define i1 @test62(i8* %a) {
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; CHECK-LABEL: @test62(
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; CHECK-NEXT: ret i1 true
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;
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%arrayidx1 = getelementptr inbounds i8, i8* %a, i64 1
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%arrayidx2 = getelementptr inbounds i8, i8* %a, i64 10
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%cmp = icmp slt i8* %arrayidx1, %arrayidx2
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ret i1 %cmp
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}
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define i1 @test62_as1(i8 addrspace(1)* %a) {
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; CHECK-LABEL: @test62_as1(
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; CHECK-NEXT: ret i1 true
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;
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%arrayidx1 = getelementptr inbounds i8, i8 addrspace(1)* %a, i64 1
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%arrayidx2 = getelementptr inbounds i8, i8 addrspace(1)* %a, i64 10
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%cmp = icmp slt i8 addrspace(1)* %arrayidx1, %arrayidx2
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ret i1 %cmp
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}
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; Variation of the above with an ashr
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define i1 @icmp_and_ashr_multiuse(i32 %X) {
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; CHECK-LABEL: @icmp_and_ashr_multiuse(
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; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 240
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; CHECK-NEXT: [[AND2:%.*]] = and i32 [[X]], 496
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[AND]], 224
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; CHECK-NEXT: [[TOBOOL2:%.*]] = icmp ne i32 [[AND2]], 432
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; CHECK-NEXT: [[AND3:%.*]] = and i1 [[TOBOOL]], [[TOBOOL2]]
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; CHECK-NEXT: ret i1 [[AND3]]
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;
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%shr = ashr i32 %X, 4
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%and = and i32 %shr, 15
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%and2 = and i32 %shr, 31 ; second use of the shift
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%tobool = icmp ne i32 %and, 14
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%tobool2 = icmp ne i32 %and2, 27
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%and3 = and i1 %tobool, %tobool2
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ret i1 %and3
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}
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define i1 @icmp_lshr_and_overshift(i8 %X) {
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; CHECK-LABEL: @icmp_lshr_and_overshift(
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ugt i8 [[X:%.*]], 31
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; CHECK-NEXT: ret i1 [[TOBOOL]]
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;
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%shr = lshr i8 %X, 5
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%and = and i8 %shr, 15
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%tobool = icmp ne i8 %and, 0
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ret i1 %tobool
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}
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; We shouldn't simplify this because the and uses bits that are shifted in.
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define i1 @icmp_ashr_and_overshift(i8 %X) {
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; CHECK-LABEL: @icmp_ashr_and_overshift(
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; CHECK-NEXT: [[SHR:%.*]] = ashr i8 [[X:%.*]], 5
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; CHECK-NEXT: [[AND:%.*]] = and i8 [[SHR]], 15
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i8 [[AND]], 0
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; CHECK-NEXT: ret i1 [[TOBOOL]]
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;
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%shr = ashr i8 %X, 5
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%and = and i8 %shr, 15
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%tobool = icmp ne i8 %and, 0
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ret i1 %tobool
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}
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; PR16244
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define i1 @test71(i8* %x) {
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; CHECK-LABEL: @test71(
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; CHECK-NEXT: ret i1 false
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;
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%a = getelementptr i8, i8* %x, i64 8
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%b = getelementptr inbounds i8, i8* %x, i64 8
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%c = icmp ugt i8* %a, %b
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ret i1 %c
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}
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define i1 @test71_as1(i8 addrspace(1)* %x) {
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; CHECK-LABEL: @test71_as1(
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; CHECK-NEXT: ret i1 false
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;
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%a = getelementptr i8, i8 addrspace(1)* %x, i64 8
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%b = getelementptr inbounds i8, i8 addrspace(1)* %x, i64 8
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%c = icmp ugt i8 addrspace(1)* %a, %b
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ret i1 %c
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}
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