mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
52fb846578
plus some variations of this. According to my auto-simplifier this occurs a lot but usually in combination with max/min idioms. Because max/min aren't handled yet this unfortunately doesn't have much effect in the testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125462 91177308-0d34-0410-b5e6-96231b3b80d8
190 lines
3.3 KiB
LLVM
190 lines
3.3 KiB
LLVM
; RUN: opt < %s -instsimplify -S | FileCheck %s
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target datalayout = "p:32:32"
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define i1 @ptrtoint() {
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; CHECK: @ptrtoint
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%a = alloca i8
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%tmp = ptrtoint i8* %a to i32
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%r = icmp eq i32 %tmp, 0
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ret i1 %r
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; CHECK: ret i1 false
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}
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define i1 @zext(i32 %x) {
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; CHECK: @zext
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%e1 = zext i32 %x to i64
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%e2 = zext i32 %x to i64
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%r = icmp eq i64 %e1, %e2
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ret i1 %r
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; CHECK: ret i1 true
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}
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define i1 @zext2(i1 %x) {
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; CHECK: @zext2
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%e = zext i1 %x to i32
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%c = icmp ne i32 %e, 0
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ret i1 %c
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; CHECK: ret i1 %x
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}
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define i1 @zext3() {
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; CHECK: @zext3
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%e = zext i1 1 to i32
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%c = icmp ne i32 %e, 0
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ret i1 %c
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; CHECK: ret i1 true
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}
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define i1 @sext(i32 %x) {
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; CHECK: @sext
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%e1 = sext i32 %x to i64
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%e2 = sext i32 %x to i64
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%r = icmp eq i64 %e1, %e2
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ret i1 %r
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; CHECK: ret i1 true
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}
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define i1 @sext2(i1 %x) {
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; CHECK: @sext2
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%e = sext i1 %x to i32
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%c = icmp ne i32 %e, 0
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ret i1 %c
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; CHECK: ret i1 %x
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}
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define i1 @sext3() {
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; CHECK: @sext3
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%e = sext i1 1 to i32
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%c = icmp ne i32 %e, 0
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ret i1 %c
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; CHECK: ret i1 true
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}
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define i1 @add(i32 %x, i32 %y) {
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; CHECK: @add
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%l = lshr i32 %x, 1
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%q = lshr i32 %y, 1
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%r = or i32 %q, 1
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%s = add i32 %l, %r
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @add2(i8 %x, i8 %y) {
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; CHECK: @add2
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%l = or i8 %x, 128
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%r = or i8 %y, 129
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%s = add i8 %l, %r
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%c = icmp eq i8 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @add3(i8 %x, i8 %y) {
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; CHECK: @add3
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%l = zext i8 %x to i32
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%r = zext i8 %y to i32
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%s = add i32 %l, %r
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 %c
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}
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define i1 @add4(i32 %x, i32 %y) {
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; CHECK: @add4
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%z = add nsw i32 %y, 1
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%s1 = add nsw i32 %x, %y
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%s2 = add nsw i32 %x, %z
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%c = icmp slt i32 %s1, %s2
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ret i1 %c
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; CHECK: ret i1 true
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}
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define i1 @add5(i32 %x, i32 %y) {
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; CHECK: @add5
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%z = add nuw i32 %y, 1
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%s1 = add nuw i32 %x, %z
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%s2 = add nuw i32 %x, %y
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%c = icmp ugt i32 %s1, %s2
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ret i1 %c
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; CHECK: ret i1 true
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}
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define i1 @addpowtwo(i32 %x, i32 %y) {
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; CHECK: @addpowtwo
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%l = lshr i32 %x, 1
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%r = shl i32 1, %y
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%s = add i32 %l, %r
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @or(i32 %x) {
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; CHECK: @or
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%o = or i32 %x, 1
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%c = icmp eq i32 %o, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @shl(i32 %x) {
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; CHECK: @shl
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%s = shl i32 1, %x
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @lshr(i32 %x) {
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; CHECK: @lshr
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%s = lshr i32 -1, %x
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @ashr(i32 %x) {
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; CHECK: @ashr
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%s = ashr i32 -1, %x
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%c = icmp eq i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 false
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}
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define i1 @select1(i1 %cond) {
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; CHECK: @select1
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%s = select i1 %cond, i32 1, i32 0
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%c = icmp eq i32 %s, 1
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ret i1 %c
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; CHECK: ret i1 %cond
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}
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define i1 @select2(i1 %cond) {
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; CHECK: @select2
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%x = zext i1 %cond to i32
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%s = select i1 %cond, i32 %x, i32 0
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%c = icmp ne i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 %cond
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}
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define i1 @select3(i1 %cond) {
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; CHECK: @select3
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%x = zext i1 %cond to i32
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%s = select i1 %cond, i32 1, i32 %x
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%c = icmp ne i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 %cond
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}
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define i1 @select4(i1 %cond) {
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; CHECK: @select4
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%invert = xor i1 %cond, 1
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%s = select i1 %invert, i32 0, i32 1
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%c = icmp ne i32 %s, 0
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ret i1 %c
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; CHECK: ret i1 %cond
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}
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