133 lines
4.3 KiB
LLVM
133 lines
4.3 KiB
LLVM
; This test case tests the InstructionCombining optimization that
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; reduces things like:
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; %Y = sext i8 %X to i32
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; %C = icmp ult i32 %Y, 1024
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; to
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; %C = i1 true
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; It includes test cases for different constant values, signedness of the
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; cast operands, and types of setCC operators. In all cases, the cast should
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; be eliminated. In many cases the setCC is also eliminated based on the
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; constant value and the range of the casted value.
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;
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; RUN: opt < %s -instcombine -S | \
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; RUN: notcast .*int
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; END.
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define i1 @lt_signed_to_large_unsigned(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ult i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_signed_to_large_signed(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_signed_to_large_negative(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, -1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_signed_to_small_signed(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, 17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_signed_to_small_negative(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, -17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_unsigned_to_large_unsigned(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ult i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_unsigned_to_large_signed(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_unsigned_to_large_negative(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, -1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_unsigned_to_small_unsigned(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ult i32 %Y, 17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @lt_unsigned_to_small_negative(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp slt i32 %Y, -17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_signed_to_large_unsigned(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ugt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_signed_to_large_signed(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_signed_to_large_negative(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, -1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_signed_to_small_signed(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, 17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_signed_to_small_negative(i8 %SB) {
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%Y = sext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, -17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_unsigned_to_large_unsigned(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ugt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_unsigned_to_large_signed(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, 1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_unsigned_to_large_negative(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, -1024 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_unsigned_to_small_unsigned(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp ugt i32 %Y, 17 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @gt_unsigned_to_small_negative(i8 %SB) {
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%Y = zext i8 %SB to i32 ; <i32> [#uses=1]
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%C = icmp sgt i32 %Y, -17 ; <i1> [#uses=1]
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ret i1 %C
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}
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